Flight Shenzhen Bao'an International Airport departs from Shenzhen Shenzhen Bao'an International Airport at 19:00 and arrives at Melbourne Melbourne Airport at 06:20.
The flighttime is about 9h 20m. The distance travelled ("as the bird flies"): 5152 Km. So the average speed is roughly 552 Km.
There is an 2 hour time difference between Shenzhen and Melbourne