how many hours are there from shenzhen -shanghai How much? How many trains do they have daily

There are four day time bullet trains available from Shenzhen to Shanghai, about 12 hours or a little more time, CNY594 for the first class seats and CNY479 for the second class ones. Two overnight trains running about 19 hours, CNY638 for the soft sleeper and CNY407 for the hard sleeper berth.