[1][2] When Duke Huan died in the tenth month of 643 BC, the six princes fought one another for the throne.
[1][2] Duke Zhao reigned for 20 years and died in the fifth month of 613 BC, and his son She ascended the throne.
However, just two months later Prince Shangren murdered his nephew on the tomb of Duke Xiao and usurped the throne.
[1][2] Duke Yì reigned for four years, and was killed by Bing Chu (邴歜) and Yan Zhi (閻職) in 609 BC.
The ministers of Qi deposed his son and installed his half-brother Prince Yuan, who was then exiled in the State of Wey, on the throne.