I would like to know from guangzhou to zhenjiang. how many hours and how to get there?

There is a direct train for this route. It leaves at 07:52, and the travel time is about 23.5 hours, and the fare for the hard sleeper is CNY416 and soft sleeper CNY725.

Well, to save time, you can fly to Nanjing first in 2h. The Nanjing Airport operates the direct intercity buses to your destination and it takes about 1.5h.