Horse racing had been run in Peking to commemorate Daoists Qiu Chu-ji birthday on 1635-02-10, the 19th day of the first lunar month.1148-02-10, Feast of Qiu, or ”Yen Ninth”.
1635, those events, usually of the first lunar month on the 19th. were mentioned in the 《Empirical Capital Guide of White Cloud Temple》. The inaugural horse race with betting in Chinese history recorded with date.