Chinese engineers rolled out a Long March 7 rocket to a seaside launch complex on Hainan Island in the South China Sea on Monday, aiming to fire a robotic refueling freighter into orbit as soon as Thursday to test technology for China’s future space station.

https://spaceflightnow.com/2017/04/17/chinas-first-robotic-resupply-freighter-transferred-to-launch-pad/