Tianzhou 1 (TZ 1) is the first Chinese cargo spacecraft to service the Tiangong 2 and follow on space stations.
The supply spacecraft is based on the Tiangong design. Tiangong will be launched on CZ-7 rockets from Wenchang.
The maiden flight, Tianzhou 1, was launched in April 2017 to test operations with the experimental Tiangong 2 space station.
The second flight, Tianzhou 2 in 2021 will dock with the next station, the modular Chinese Space Station (CSS). The third and fourth will follow in 2022 and 2023.