According to the date and train number indicated on the ticket, you can get on the bus at the midway station, but the fare for the section you did not take will not be refunded. If you buy tickets at 12306.cn, please exchange paper tickets before driving when you get on the bus at the midway station.
Source: 12306 official website.
/mormhweb/TLCS/20 1505/t 20 1505 1 1 _ 16532 . html