Flight Shenzhen Bao'an International Airport departs from Shenzhen Shenzhen Bao'an International Airport at 06:20 and arrives at Lanzhou Lanzhou Zhongchuan Airport at 09:40.
The flighttime is about 11h 20m. The distance travelled ("as the bird flies"): 1229 Km. So the average speed is roughly 108 Km.
There is an 8 hour time difference between Shenzhen and Lanzhou