Tiangong is China's permanent space station, which will operate in low-Earth orbit at altitudes ranging from 340 to 450 kilometres.

Tiangong weighs about 66 tons with all 3 modules 

Tiangong weighs about 66 tons with all 3 modules

The Chinese space station has 3 modules:  1. Tianhe core module  2. Wentian Module 3. Mengtian Module

China will have the only space station in orbit after the ISS expires in 2024

China has planned a Xuntian space telescope which will co-orbit with Tiangong, with a slightly different orbital phase