Duke Jing of Qi

[1][2] After years of unrest as two powerful ministers, Cui Zhu (崔杼) and Qing Feng (慶封), sought to control the Qi state, Duke Jing appointed Yan Ying as his prime minister, and Qi entered a period of relative peace and prosperity.

His mother was a daughter of Shusun Xuanbo, head of one of the Three Huan clans that dominated the control of power in the neighbouring State of Lu.

Cui and Qing Feng (慶封), another powerful nobleman, were Duke Jing's co-prime ministers and controlled the state.

[1][2] In 546 BC, the second year of Duke Jing's reign, the sons of Cui Zhu's two wives fought each other for the right to succeed their father as leader of the clan.

[1][2] After the Cui–Qing unrest, Duke Jing appointed Yan Ying as his prime minister, and the State of Qi entered a period of relative peace and prosperity.

Yan Ying died in 500 BC, the 48th year of Duke Jing's reign, and is remembered as one of the greatest statesmen and diplomats of the Spring and Autumn period.

[4] In 1964, archaeologists made a striking discovery of a large site of sacrificial horses buried on the northern side of the tomb.

[7] Since 2008 it has been included in the tentative list of UNESCO World Heritage Sites as part of the ancient Qi capital and mausoleum complex.