How can i go from nanjing to beijing by train,how much is this ticket?

You are suggested to take a train at South Railway Station, and there are many available trains from 6:51 to 20:09. It takes you from 3hours and 50 minutes to nearly 5 hours. The second-class seat costs CNY443.5, the first-class costs CNY748.5 and the business class is CNY1403.5.