Qi was the final unconquered warring state. It had not previously contributed or helped other states when Qin was conquering them. As soon as Qin's intention to invade it became clear, Qi swiftly surrendered all its cities, completing the unification of China and ushering in the Qin dynasty. The last Qi king lived out his days in exile in Gong and was not given a posthumous name after death, therefore he is known to posterity by his personal name Jian.