Reporters from the Chengdu Railway Bureau, in accordance with the requirements of the Ministry of Railways, from January 16, the Chengdu-Chongqing to Shanghai sleeper EMU (d358, d354, d318, d320 times) All tickets pre-sale period adjusted to 11 days, phone pre-booking period is 3 to 11 days (the day is day 1), pre-sale ticket window period of 1 to 10 days. In the past, EMU sleeper ticket pre-sale period is 20 days. Source: Sichuan Daily