This paper focus on the new explanation of Chinese myths about the Metamorphosis of Gun, Yu and Qi, three divine kings of the Xia Dynasty (about 2100BC).Using the main evidences from new excavated prehistoric figures of bears in northern China, the author tries to answer the question why the Yellow Emperor named 「having bear」(YOU XIONG), and why the Chinese people got lost their ancient bear totem in the history, and how the divine figure Dragon replaced the divine bear.