As early as in Qin Dynasty three counties were set under jurisdiction of the central government, Yazhou, or called Xiangjun was one of which. Han Dynasty established Zhuya County, Sui Dynasty set Linzhen and Tang Dynasty changed it to Zhenzhou for today's Sanya. By Song Dynasty Sanya had become the southernmost county of China. As Sanya lies remote from the mainland and the central government, it has long been called "the end of the earth" since old times. Yaxian County was liberated in April 1950, and the county government was established. Approved by the State Council of China, Yaxian was upgraded to Sanya City on September 26, 1987. On December 30 on the same year, Sanya City was officially named and performed accordingly.