Summary:

- China is preparing to launch two new modules to its Tiangong space station later this year. These modules will expand the station's capabilities and allow for more scientific experiments to be conducted in space.

- The new modules, named Wentian and Mengtian, will be launched separately and then dock with the Tiangong station. This will increase the station's total mass and volume, providing more room for astronauts and research activities.

- The Tiangong space station is China's first permanent presence in orbit and is an important milestone in the country's space program. The addition of these new modules demonstrates China's commitment to building a robust and long-term human presence in space.