Usurpation of Qi by Tian the name "Qi" for its realm after the usurpation. For historiographical purposes, pre-usurpation Qi is referred to as "Jiang Qi" (姜齊), and post-usurpation Qi is referred to as "Tian Qi" (田齊). Qi was originally ruled by the Jiang clan, the descendants of Jiang Ziya. In 672 BCE, Prince Chen Wan of the State of Chen fled to Qi following political unrest in his native state and became the progenitor of the Chen clan of Qi, which was later known as Tian. By 545 BCE, the Tian clan was one of the strongest families in Qi. Tian Huanzi, in conjunction with
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