Chinese era name in the context of "List of Yuan emperors"

The Japanese era name (Japanese: 元号, Hepburn: gengō; "era name") or nengō (年号, year name), is the first of the two elements that identify years in the Japanese era calendar scheme. The second element is a number which indicates the year number within the era (with the first year being "gan (元)", meaning "origin, basis"), followed by the literal "nen (年)" meaning "year".

Era names originated in 140 BCE in Imperial China, during the reign of the Emperor Wu of Han. As elsewhere in the Sinosphere, the use of era names was originally derived from Chinese imperial practice, although the Japanese system is independent of the Chinese, Korean, and Vietnamese era name systems. Unlike its other Sinosphere counterparts, Japanese era names are still in official use. Government offices usually require era names and years for official papers.

The conquest of Wu by Jin was a military campaign launched by the Jin dynasty against the state of Wu from late 279 to mid 280 at the end of the Three Kingdoms period of China. The campaign, which started in December 279 or January 280, concluded with complete victory for the Jin dynasty on 1 May 280 when the Wu emperor Sun Hao surrendered. After the campaign, the Jin emperor Sima Yan (Emperor Wu) changed the era name of his reign from "Xianning" to "Taikang". Hence, the campaign has also been referred to as the Taikang campaign.

The campaign is significant in pre-1911 Chinese military history as it not only ended the chaos of the Three Kingdoms period and reunified China under the Jin dynasty, but was also the first successful large-scale military operation in Chinese history that involved a massive invasion force crossing the Yangtze. Among other aspects, its multi-directional approach, invasions by both land and water, and the sending of a naval fleet downstream along the Yangtze, have had strong influences on subsequent battles in Chinese military history.

Abaoji (872 – 6 September 926), posthumously known by his temple name as the Emperor Taizu of Liao, was a Khitan leader and the founding emperor of the Liao dynasty of China, ruling from 916 to 926. He had a sinicised name, Yelü Yi; some sources suggest that Abaoji's family name, Yelü, was adopted during his lifetime, although there is no consensus amongst historians on this point.

Abaoji was born in 872 in Southern Mongolia and had a turbulent childhood. His grandfather was killed in a conflict between tribes, and his father and uncles fled. He was hidden by his grandmother for his safety. He became khagan of the Khitans on 27 February 907, and was subsequently enthroned as emperor in 916, proclaiming his own era name. He died on 6 September 926. He was responsible for the conquest and unification of all of Inner Mongolia, northern China and southern Manchuria. After the Khitan Empire became the Liao dynasty in 942, Abaoji was posthumously considered a Liao emperor.

The Jingkang Incident (Chinese: 靖康事變; pinyin: Jìngkāng shì biàn), also known as the Humiliation of Jingkang (靖康之恥; Jìngkāng zhī chǐ) and the Disorders of the Jingkang Period (靖康之亂; Jìngkāng zhī luàn), was an episode of invasions and atrocities that took place in 1127 during the Jin–Song Wars when the troops of the Jurchen-led Jin dynasty besieged and sacked the imperial palaces in Bianjing (present-day Kaifeng), the capital of the Han-led Northern Song dynasty. The Jin forces captured the Northern Song ruler, Emperor Qinzong, along with his father, the retired Emperor Huizong, and many members of the imperial family of Emperor Taizong's bloodline and officials of the Song imperial court. The ordinary Song civilians of Bianjing living in the non-imperial quarter were left alone after being forced to pay huge ransoms to the Jin.

This event marked the collapse of the Northern Song dynasty that originally controlled most of China proper. Many members of the Song imperial family, most notably Zhao Gou (later Emperor Gaozong), managed to escape to southern China, where they reestablished the Song dynasty (known in historiography as the Southern Song dynasty) in the new capital, Lin'an (present-day Hangzhou). This event also greatly contributed to the return of the descendants of Emperor Taizu to the line of succession, as most of Emperor Taizong's descendants were abducted; Emperor Gaozong himself failed to produce an heir as well. This event is known as the "Jingkang Incident" because it took place during the Jingkang era of the reign of Emperor Qinzong.

Temple names are posthumous titles accorded to monarchs of the Sinosphere for the purpose of ancestor worship. The practice of honoring monarchs with temple names began during the Shang dynasty in China and had since been adopted by other dynastic regimes in the Sinosphere, with the notable exception of Japan. Temple names should not be confused with era names (年號), regnal names (尊號) or posthumous names (謚號).

Modern academia usually refers to the following rulers by their temple names: Chinese monarchs from the Tang to the Yuan dynasties, Korean rulers of the Goryeo (until AD 1274) and Joseon dynasties, and Vietnamese rulers of the Lý, Trần, and Later Lê dynasties (with the Hồ and Later Trần dynasties as exceptions).

The Jianwen Emperor (5 December 1377 – 13 July 1402), personal name Zhu Yunwen, was the second emperor of the Ming dynasty, reigning from 1398 to 1402. Zhu Yunwen's father was Zhu Biao, the eldest son and heir apparent of the Hongwu Emperor, the founder of the Ming dynasty. Zhu Biao died in 1392, after which the Hongwu Emperor named Zhu Yunwen as his successor. Zhu Yunwen ascended the throne after the Hongwu Emperor's death in June 1398.

Upon his accession, the Jianwen Emperor immediately began revising the Hongwu Emperor's reforms, with the most significant change being the attempt to limit or eliminate the power of princes who were sons of the Hongwu Emperor. Zhu Di, the most powerful of these princes, rebelled against the Jianwen Emperor in 1399. He did this under the pretext of acting against allegedly corrupt court officials who had influenced the Emperor, following the Emperor's order for the imprisonment of Zhu Di's own followers. This sparked a civil war known as the Jingnan campaign, which Zhu Di framed as an effort to eliminate disorder. In 1402, Zhu Di captured the capital of Nanjing, and the imperial palace was burned to the ground. Even though three bodies were found at the burnt palace and were later announced to be those of the Emperor, his wife, and their eldest son, rumors of the Emperor's survival and refuge in a Buddhist monastery emerged. Zhu Di ascended the throne as the Yongle Emperor. He abolished the Jianwen Emperor's reforms and declared his reign illegitimate, thus abolishing the Jianwen era and extending the era of Hongwu to 1402. It was not until 1595 that the Jianwen Emperor's era and imperial title were restored by the Wanli Emperor.

The Yongli Emperor (1623–1662), personal name Zhu Youlang, was the fourth and last emperor of the Southern Ming dynasty, reigning in turbulent times when the former Ming dynasty was overthrown and the Manchu-led Qing dynasty progressively conquered the entire China proper. He led the remnants of the Ming loyalists with the assistance of peasant armies to resist the Qing forces in southwestern China, but he was then forced to exile to Toungoo Burma and eventually captured and executed by Wu Sangui in 1662. His era name "Yongli" means "perpetual calendar".

Zhu Youlang was the son of Zhu Changying (朱常瀛), the seventh son of the Wanli Emperor, and Empress Dowager Ma. He inherited the title Prince of Gui (桂王) from his brother and lived an obscure life as a minor member of the Ming imperial family until the rebellions of peasant armies, which resulted to the fall of the imperial capital, Beijing, and the suicide of the last Ming emperor, Chongzhen, after the peasant rebel leader Li Zicheng captured Beijing in 1644. The true beneficiaries of the collapse of the Ming were the Qing dynasty, ruled by the emerging nation Manchus from Manchuria. After mass defection from Ming remnants, including a former Ming general, Wu Sangui, who allowed the Qing forces to pass the Ming Great Wall against Li Zicheng. The Qing forces defeated the peasant armies and rapidly expanded to northern China, the Lower Yangtze valley, and Central China. The Ming loyalists continued to resist in southern China, with several former Ming royal members regrouping in the south in attempt to re-establish the Ming governance, but all failed before the rapid Manchu military advance. Youlang ascended the throne in Zhaoqing as the fourth Southern Ming emperor in November 1646.