Han dynasty in the context of Cosmology

Sima Tan (traditional Chinese: 司馬談; simplified Chinese: 司马谈; pinyin: Sīmǎ Tán; Wade–Giles: Ssu-ma T'an; c. 165–110 BCE) was a Chinese astrologist, astronomer, and historian during the Western Han dynasty. His work Records of the Grand Historian was completed by his son Sima Qian, who is considered the founder of Chinese historiography.

Sima Qian (c. 145 BC – c. 86 BC) was a Chinese historian during the early Han dynasty. He is considered the father of Chinese historiography for the Shiji (sometimes translated into English as Records of the Grand Historian), a general history of China covering more than two thousand years from the rise of the legendary Yellow Emperor and formation of the first Chinese polity to the reign of Emperor Wu of Han, during which Sima wrote. As the first universal history of the world as it was known to the ancient Chinese, the Shiji served as a model for official histories for subsequent dynasties across the Sinosphere until the 20th century.

Sima Qian's father, Sima Tan, first conceived of the ambitious project of writing a complete history of China, but had completed only some preparatory sketches at the time of his death. After inheriting his father's position as court historian in the imperial court, he was determined to fulfill his father's dying wish of composing and putting together this epic work of history. However, in 99 BC, he would fall victim to the Li Ling affair for speaking out in defense of the general, who was blamed for an unsuccessful campaign against the Xiongnu. Given the choice of being executed or castrated, he chose the latter in order to finish his historical work. Although he is universally remembered for the Records, surviving works indicate that he was also a gifted poet and prose writer, and he was instrumental in the creation of the Taichu calendar, which was officially promulgated in 104 BC.

The Shiji (simplified Chinese: 史记; traditional Chinese: 史記; pinyin: Shǐjì; lit. 'Historical Records'), also known as Records of the Grand Historian or The Grand Scribe's Records (simplified Chinese: 太史公书; traditional Chinese: 太史公書; pinyin: Tàishǐgōng shū), is a Chinese historical text that is the first of the Twenty-Four Histories of imperial China. It was written during the late 2nd and early 1st centuries BC by the Han dynasty historian Sima Qian, building upon work begun by his father Sima Tan. The work covers a 2,500-year period from the age of the legendary Yellow Emperor to the reign of Emperor Wu of Han in the author's own time, and describes the world as it was known to the Chinese of the Western Han dynasty.

The Shiji has been called a "foundational text in Chinese civilization". Following Confucius and Qin Shi Huang, "Sima Qian was one of the creators of Imperial China; by providing definitive biographies, he effectively shaped the enduring images of these two earlier figures." The Shiji set the model for all subsequent dynastic histories of China. In contrast to Western historiographical conventions, the Shiji does not treat history as "a continuous, sweeping narrative", but rather breaks it up into smaller, overlapping units dealing with famous leaders, individuals, and major topics of significance.

Chinese characters are logographs used to write the Chinese languages and others from regions historically influenced by Chinese culture. Of the four independently invented writing systems accepted by scholars, they represent the only one that has remained in continuous use. Over a documented history spanning more than three millennia, the function, style, and means of writing characters have changed greatly. Unlike letters in alphabets that reflect the sounds of speech, Chinese characters generally represent morphemes, the units of meaning in a language. Writing all of the frequently used vocabulary in a language requires roughly 2000–3000 characters; as of 2025, more than 100000 have been identified and included in The Unicode Standard. Characters are created according to several principles, where aspects of shape and pronunciation may be used to indicate the character's meaning.

The first attested characters are oracle bone inscriptions made during the 13th century BCE in what is now Anyang, Henan, as part of divinations conducted by the Shang dynasty royal house. Character forms were originally ideographic or pictographic in style, but evolved as writing spread across China. Numerous attempts have been made to reform the script, including the promotion of small seal script by the Qin dynasty (221–206 BCE). Clerical script, which had matured by the early Han dynasty (202 BCE – 220 CE), abstracted the forms of characters—obscuring their pictographic origins in favour of making them easier to write. Following the Han, regular script emerged as the result of cursive influence on clerical script, and has been the primary style used for characters since. Informed by a long tradition of lexicography, states using Chinese characters have standardized their forms—broadly, simplified characters are used to write Chinese in mainland China, Singapore, and Malaysia, while traditional characters are used in Taiwan, Hong Kong, and Macau.

The Tang dynasty (/tɑːŋ/, [tʰǎŋ]; Chinese: 唐朝), or the Tang Empire, was an imperial dynasty of China that ruled from 618 to 907, with an interregnum between 690 and 705. It was preceded by the Sui dynasty and followed by the Five Dynasties and Ten Kingdoms period. Historians generally regard the Tang as a high point in Chinese civilisation, and a golden age of cosmopolitan culture. Tang territory, acquired through the military campaigns of its early rulers, rivalled that of the Han dynasty.

The Li family founded the dynasty after taking advantage of a period of Sui decline and precipitating their final collapse, in turn inaugurating a period of progress and stability in the first half of the dynasty's rule. The dynasty was formally interrupted during 690–705 when Empress Wu Zetian seized the throne, proclaiming the Wu Zhou dynasty and becoming the only legitimate Chinese empress regnant. The An Lushan rebellion (755–763) led to devastation and the decline of central authority during the latter half of the dynasty.

Chinese philosophy (simplified Chinese: 中国哲学; traditional Chinese: 中國哲學) refers to the philosophical traditions that originated and developed within the historical and cultural context of China. It encompasses systematic reflections on issues such as existence, knowledge, ethics, and politics. Evolving over more than two millennia, Chinese philosophy includes classical traditions such as Confucianism, Daoism, and Buddhism, as well as modern responses to Western philosophical currents. As a cultural form of philosophy, it addresses universal philosophical concerns while also reflecting the specific historical and social conditions of China.

The historical development of Chinese philosophy began during the Spring and Autumn and Warring States periods, a time known as the "Hundred Schools of Thought". Major schools such as Confucianism, Daoism, Mohism, and Legalism emerged with distinct views on human nature, social order, and political authority. During the Han dynasty, Confucianism was established as the official ideology, shaping China's intellectual and political systems for centuries. In subsequent eras, Chinese philosophy integrated influences from Indian Buddhism, giving rise to new developments such as Neo-Confucianism in the Song and Ming dynasties. In the modern period, Chinese thinkers engaged with Western thought, resulting in the emergence of Three Principles of the People, Chinese Marxism, New Confucianism, and other philosophical movements. Throughout the 20th century, these traditions were reshaped by political upheaval and continue to evolve today.

Colonies in antiquity were post-Iron Age city-states founded from a mother-city or metropolis rather than from a territory-at-large. Bonds between a colony and its metropolis often remained close, and took specific forms during the period of classical antiquity.Generally, colonies founded by the ancient Phoenicians, Carthage, Rome, Alexander the Great and his successors remained tied to their metropolis, though Greek colonies of the Archaic and Classical eras were sovereign and self-governing from their inception. While earlier Greek colonies were often founded to solve social unrest in the mother-city by expelling a part of the population, Hellenistic, Roman, Carthaginian, and Han Chinese colonies served as centres for trade (entrepôts), expansion and empire-building.

The phenomenon of colonization is one that has occurred around the globe and across time. Various ancient and medieval polities established colonies – such as the Phoenicians, Babylonians, Persians, Greeks, Romans, Han Chinese, and Arabs. The High Middle Ages saw colonising Europeans moving west, north, east and south. The medieval Crusader states in the Levant exemplify some colonial features similar to those of colonies in the ancient world.

A new phase of European colonialism began with the "Age of Discovery", led by the Portuguese, who became increasingly expansionist following the conquest of Ceuta in 1415. Portugal aimed to control navigation through the Strait of Gibraltar, to spread Christianity, to amass wealth and plunder, and to suppress predation on Portuguese populations by Barbary pirates (who operated as part of a longstanding African slave tradeat that point a minor trade, one the Portuguese would soon reverse and surpass). Around 1450 the Portuguese developed a lighter ship, the caravel based on North African fishing boats. Caravels could sail further and faster than previous vessels, were highly maneuverable, and could sail into the wind.

The history of Chinese literature extends thousands of years, and begins with the earliest recorded inscriptions, court archives, building to the major works of philosophy and history written during the Axial Age. The Han (202 BC – 220 AD) and Tang (618–907 AD) dynasties were considered golden ages of poetry, while the Song (960–1279) and Yuan (1271–1368) were notable for their lyrics (ci), essays, dramas, and plays. During the Ming and Qing, mature novels were written in written vernacular Chinese, an evolution from the preeminence of Literary Chinese patterned off the language of the Chinese classics. The introduction of widespread woodblock printing during the Tang and the invention of movable type printing by Bi Sheng (990–1051) during the Song rapidly spread written knowledge throughout China. Around the turn of the 20th century, the author Lu Xun (1881–1936) is considered an influential voice of vernacular Chinese literature.

The Mandate of Heaven (Chinese: 天命; pinyin: Tiānmìng; Wade–Giles: T'ien-ming; lit. 'Heaven's command') is a Chinese political doctrine that was used in Ancient China and Imperial China to legitimize the rule of the king or emperor of China. According to this doctrine, Heaven (天, Tian) bestows its mandate on a virtuous ruler, called the Son of Heaven (天子, Tianzi), who is the supreme universal monarch that will rule the world (天下, Tianxia; "[all] under heaven"). If a ruler was overthrown, this was interpreted as an indication that the ruler and his dynasty were unworthy and had lost the Mandate. It was also a common belief that natural disasters such as famine and flood were divine retributions bearing signs of Heaven's displeasure with the ruler, so there would often be revolts following major disasters as the people saw these calamities as signs that the Mandate of Heaven had been withdrawn.

The Mandate of Heaven does not require a legitimate ruler to be of noble birth. Chinese dynasties such as the Han and Ming were founded by men of common origins, but they were seen as having succeeded because they had gained the Mandate of Heaven. Retaining the mandate is contingent on the just and able performance of the rulers and their heirs.

Fajia (Chinese: 法家; pinyin: fǎjiā), or the School of fa (incl. law, method), often translated Legalism, was a bibliographic school of primarily Warring States period classical Chinese philosophy, including more administrative works traditionally said to be rooted in Huang-Lao Daoism. Addressing practical governance challenges of the unstable feudal system, their ideas 'contributed greatly to the formation of the Chinese empire' and bureaucracy, advocating concepts including rule by law, sophisticated administrative technique, and ideas of state and sovereign power. They are often interpreted along realist lines. Though persisting, the Qin to Tang were more characterized by the 'centralizing tendencies' of their traditions.

The school incorporates the more legalistic ideas of Li Kui and Shang Yang, and more administrative Shen Buhai and Shen Dao, with Shen Buhai, Shen Dao, and Han Fei traditionally said by Sima Qian to be rooted in Huang-Lao (Daoism). Shen Dao may have been a significant early influence for Daoism and administration. These earlier currents were synthesized in the Han Feizi, including some of the earliest commentaries on the Daoist text Daodejing. The later Han dynasty considered Guan Zhong to be a forefather of the school, with the Guanzi added later. Later dynasties regarded Xun Kuang as a teacher of Han Fei and Qin Chancellor Li Si, as attested by Sima Qian, approvingly included during the 1970s along with figures like Zhang Binglin.

The Lower Paleolithic era on the Korean Peninsula and in Manchuria began roughly half a million years ago. The earliest known Korean pottery dates to around 8000 BC and the Neolithic period began thereafter, followed by the Bronze Age by 2000 BC, and the Iron Age around 700 BC. The Paleolithic people are likely not the direct ancestors of the present Korean people, but their direct ancestors are thought to be the Neolithic People of about 2000 BC.

According to the mythic account recounted in the Samguk yusa (1281), the Gojoseon kingdom was founded in northern Korea and southern Manchuria in 2333 BC. The first written historical record on Gojoseon can be found from the text Guanzi. The Jin state was formed in southern Korea by the 3rd century BC. In the late 2nd century BC, Gojoseon eventually fell to the Han dynasty of China, which led to succeeding warring states, the Proto–Three Kingdoms period.

Korea is a peninsular region in East Asia consisting of the Korean Peninsula, Jeju Island, and smaller islands. Since the end of World War II in Asia in 1945, it has been politically divided at or near the 38th parallel between North Korea (Democratic People's Republic of Korea; DPRK) and South Korea (Republic of Korea; ROK). Both countries proclaimed independence in 1948, and the two countries fought the Korean War from 1950 to 1953. The region is bordered by China to the north and Russia to the northeast, across the Amnok (Yalu) and Duman (Tumen) rivers, and is separated from Japan to the southeast by the Korea Strait.

Known human habitation of the Korean peninsula dates to 40,000 BC. The kingdom of Gojoseon, which according to tradition was founded in 2333 BC, fell to the Han dynasty in 108 BC. It was followed by the Three Kingdoms period, in which Korea was divided into Goguryeo, Baekje, and Silla. In 668 AD, Silla conquered Baekje and Goguryeo with the aid of the Tang dynasty, forming Unified Silla; Balhae succeeded Goguryeo in the north. In the late 9th century, Unified Silla collapsed into three states, beginning the Later Three Kingdoms period. In 918, Goguryeo was resurrected as Goryeo, which achieved what has been called a "true national unification" by Korean historians, as it unified both the Later Three Kingdoms and the ruling class of Balhae after its fall. Goryeo, whose name developed into the modern exonym "Korea", was highly cultured and saw the invention of the first metal movable type. During the 13th century, Goryeo became a vassal state of the Mongol Empire. Goryeo overthrew Mongol rule before falling to a coup led by General Yi Seong-gye, who established the Joseon dynasty in 1392. The first 200 years of Joseon were marked by peace; the Hangul, the Korean alphabet was created and Confucianism became influential. This ended with Japanese and Qing invasions, which brought devastation to Joseon and led to Korean isolationism. After the invasions, an isolated Joseon experienced another nearly 200-year period of peace and prosperity, along with cultural and technological development. In the final years of the 19th century, Japan forced Joseon to open up and Joseon experienced turmoil such as the Kapsin Coup, Donghak Peasant Revolution, and the assassination of Empress Myeongseong. In 1895, Japan defeated China in the First Sino-Japanese War and China lost suzerainty over Korea and Korea was placed under further Japanese influence. In 1897, the centuries old Joseon was replaced by the Korean Empire with the Joseon's last king, Gojong, becoming the Emperor of the Korean Empire. Japan's further victory in the 1904–1905 Russo-Japanese War, expelled Russian influence in Korea and Manchuria. In 1905, the Korean Empire became a protectorate of the Empire of Japan. In 1910, the Empire of Japan officially annexed the Korean peninsula.

The Parthian Empire (/ˈpɑːrθiən/), also known as the Arsacid Empire (/ˈɑːrsəsɪd/), was a major Iranian political and cultural power centered in ancient Iran from 247 BC to 224 AD. Its latter name comes from its founder, Arsaces I, who led the Parni tribe in conquering the region of Parthia in Iran's northeast, then a satrapy (province) under Andragoras, who was rebelling against the Seleucid Empire. Mithridates I (r. c. 171 – 132 BC) greatly expanded the empire by seizing Media and Mesopotamia from the Seleucids. At its height, the Parthian Empire stretched from the northern reaches of the Euphrates, in what is now central-eastern Turkey, to present-day Afghanistan and western Pakistan. The empire, located on the Silk Road trade route between the Roman Empire in the Mediterranean Basin and the Han dynasty of China, became a center of trade and commerce.

The Parthians largely adopted the art, architecture, religious beliefs, and regalia of their culturally heterogeneous empire, which encompassed Persian, Hellenistic, and regional cultures. For about the first half of its existence, the Arsacid court adopted elements of Greek culture, though it eventually saw a gradual revival of Iranian traditions. The Arsacid rulers were titled "King of Kings", claiming inheritance of the Achaemenid Empire; indeed, they accepted many local kings as vassals, although the Achaemenids would have had centrally appointed, albeit largely autonomous, satraps. The court did appoint a small number of satraps, largely outside Iran, but these satrapies were smaller and less powerful than the Achaemenid potentates. With the expansion of Arsacid power, the seat of central government shifted from Nisa to Ctesiphon along the Tigris (south of Baghdad), although several other sites also served as capitals.

The Yellow Emperor, also known as the Yellow Thearch or Huangdi (traditional Chinese: 黃帝; simplified Chinese: 黄帝), was a mythical Chinese sovereign and culture hero included among the legendary Three Sovereigns and Five Emperors. He is revered as a deity individually or as part of the Five Regions Highest Deities (Chinese: 五方上帝; pinyin: Wǔfāng Shàngdì) in Chinese folk religion. Regarded as the initiator of Chinese culture, he is traditionally credited with numerous innovations – including the traditional Chinese calendar, Taoism, wooden houses, boats, carts, the compass needle, "the earliest forms of writing", and cuju, a ball game. Calculated by Jesuit missionaries, as based on various Chinese chronicles, Huangdi's traditional reign dates begin in either 2698 or 2697 BC, spanning one hundred years exactly, later accepted by the twentieth-century promoters of a universal calendar starting with the Yellow Emperor.

Huangdi's cult is first attested in the Warring States period, and became prominent late in that same period and into the early Han dynasty, when he was portrayed as the originator of the centralized state, as a cosmic ruler, and as a patron of esoteric arts. A large number of texts – such as the Huangdi Neijing, a medical classic, and the Huangdi Sijing, a group of political treatises – were thus attributed to him. Having waned in influence during most of the imperial period, in the early twentieth century Huangdi became a rallying figure for Han Chinese attempts to overthrow the rule of the Qing dynasty, remaining a powerful symbol within modern Chinese nationalism.

Emperor Wu of Han (156 – 29 March 87 BC), personal name Liu Che and courtesy name Tong, was the seventh emperor of the Han dynasty from 141 to 87 BC. His reign lasted 54 years – a record not broken until the reign of the Kangxi Emperor more than 1,800 years later – and remains the record for ethnic Han emperors. His reign resulted in a vast expansion of geopolitical influence for the Chinese civilization, and the development of a strong centralized state via governmental policies, economical reorganization and promotion of a hybrid Legalist–Confucian doctrine. In the field of historical social and cultural studies, Emperor Wu is known for his religious innovations and patronage of the poetic and musical arts, including the development of the Imperial Music Bureau into a prestigious entity. It was also during his reign that cultural contact with western Eurasia was greatly increased, directly and indirectly.

During his reign, Emperor Wu led the Han dynasty through its greatest territorial expansion. At its height, the Empire's borders spanned from the Fergana Valley in the west, to northern Korea in the east, and to northern Vietnam in the south. Emperor Wu successfully repelled the nomadic Xiongnu from systematically raiding northern China, and dispatched his envoy Zhang Qian into the Western Regions in 139 BC to seek an alliance with the Greater Yuezhi and Kangju, which resulted in further diplomatic missions to Central Asia. Although historical records do not describe him as being aware of Buddhism, emphasizing rather his interest in shamanism, the cultural exchanges that occurred as a consequence of these embassies suggest that he received Buddhist statues from Central Asia, as depicted in the murals found in the Mogao Caves.