China's Yuanwang rocket transport fleet has successfully carried a Long March-5B Y3 rocket to its launch site in south China's Hainan Province. On the morning of May 19, two Yuanwang rocket transport carriers, under the China Satellite Maritime Tracking and Control Department, set sail from Tianjin Port in north China. After six days and nights of navigation, they passed through the Bohai Sea, Yellow Sea, East China Sea, South China Sea and other waters, and safely docked at Qinglan Port in Wenchang Spacecraft Launch Site, Hainan Province.