China has launched the Tianzhou 4 cargo resupply mission on Monday, May 9 at 17:56 UTC (13:56 EDT) to the Tiangong space station. The Tianzhou spacecraft flew on a Chang Zheng 7 (Long March 7) rocket from the Wenchang Space Launch Site in Hainan, China, to an approximate 389.5 x 395 km orbit with an inclination of 41.58 degrees.
The Tiangong space station is currently unoccupied, with the Shenzhou 13 mission undocking after its six-month stay on April 15. A new crew of three will follow Tianzhou 4 to the station in early June, with the final two module additions to the station planned for later this year.