China standard time was implemented first by foreigners who served Qing government in Aug. 1904. In 1910s, Gao Lu made a great effort to advocate standard time in China. After the popularization of radio, standard time was gradually executed, such as Guangxi province in 1933, Ministries of Communications and Railways in 1935, Chongqing Government in 1939. The evolution of China standard time was motivated by foreign force and the popularization of astronomy.