I am from Nepal and traveling to China. Now I need to go to xuzhou from Nanjing after arriving at 10:20 from flight from Guangzhou and return same day around 19:30, so I request for suggestion for appropriate schedule of G train for Nanjng - xuzhou - Nanjing. I am also unaware how to go to staition at Nanjing from Nanjing airport and how long it takes please suggest.