Flight Shenzhen Bao'an International Airport departs from Shenzhen Shenzhen Bao'an International Airport at 19:40 and arrives at Changzhou Changzhou Airport at 21:45.
The flighttime is about 10h 05m. The distance travelled ("as the bird flies"): 809 Km. So the average speed is roughly 80 Km.
There is an 8 hour time difference between Shenzhen and Changzhou