Ji (Zhou dynasty ancestral surname) in the context of "List of Zhou Dynasty states"

The Zhou dynasty (/dʒoʊ/ JOH; Chinese: 周; pinyin: Zhōu, pronunciation: [ʈʂóʊ]) was a royal dynasty of China that existed for 789 years from c. 1046 BC until 256 BC, the longest span of any dynasty in Chinese history. During the Western Zhou period (c. 1046 – 771 BC), the royal house, surnamed Ji, had military control over territories centered on the Wei River valley and North China Plain. Even as Zhou suzerainty became increasingly ceremonial over the following Eastern Zhou period (771–256 BC), the political system created by the Zhou royal house survived in some form for several additional centuries. A date of 1046 BC for the Zhou's establishment is supported by the Xia–Shang–Zhou Chronology Project and David Pankenier, but David Nivison and Edward L. Shaughnessy date the establishment to 1045 BC.

The latter Eastern Zhou period is itself roughly subdivided into two parts. During the Spring and Autumn period (c. 771 – c. 481 BC), power became increasingly decentralized as the authority of the royal house diminished. The Warring States period (c. 475 – 221 BC) that followed saw large-scale warfare and consolidation among what had formerly been Zhou client states, until the Zhou were formally extinguished by the state of Qin in 256 BC. The Qin ultimately founded the imperial Qin dynasty in 221 BC after conquering all of China.

Han was an ancient Chinese state during the Warring States period. Scholars frequently render the name as Hann to clearly distinguish it from China's later Han dynasty. It was located in central China (modern-day Shanxi and Henan) in a region south and east of Luoyang, the capital of the Eastern Zhou. It was ruled by aristocrats of the Ji (姬) family ancestral temple who rose to power as a ministerial family in the state of Jin, and whose power eventually eclipsed that of the Jin ruling house. The partition of Jin which resulted in the states of Han, Wei, and Zhao, marked the beginning of the Warring States period.

The state of Han was small and located in a mountainous and unprofitable region. Its territory directly blocked the passage of the state of Qin into the North China Plain.. Although Han had attempted to reform its governance (notably under Chancellor Shen Buhai who improved state administration and strengthened its military ability) these reforms were not enough to defend itself and it was the first of the seven warring states to be conquered by Qin in 230 BC.

Zheng (/dʒɛŋ/; Chinese: 鄭; Old Chinese: *[d]reng-s) was a vassal state in China during the Zhou dynasty (1046–221 BCE) located in the centre of ancient China in modern-day Henan Province on the North China Plain about 75 miles (121 km) east of the royal capital at Luoyang. It was the most powerful of the vassal states at the beginning of the Eastern Zhou (771–701 BCE), and was the first state to clearly establish a code of law in its late period of 543 BCE. Its ruling house had the ancestral name Ji (姬), making them a branch of the Zhou royal house, who held the rank of Bo (伯), a kinship term meaning "elder".

Dan, Duke Wen of Zhou, commonly known as the Duke of Zhou, was a member of the royal family of the early Zhou dynasty who played a major role in consolidating the kingdom established by his elder brother King Wu. He was renowned for acting as a capable and loyal regent for his young nephew King Cheng, and for successfully suppressing the Rebellion of the Three Guards and establishing firm rule of the Zhou dynasty over eastern China. He is also a Chinese culture hero, with the authorship of the I Ching and the Classic of Poetry having traditionally been attributed to him, as well as the establishment of the Rites of Zhou.