China's reusable Shenlong space plane launched on its fourth space mission earlier this month. What is it doing in Earth orbit, and how do those activities advance China's space goals?

China's mysterious Shenlong space plane recently launched on its 4th mission. What is it doing up there?

Source: space
Source Link: https://www.space.com/space-exploration/launches-spacecraft/chinas-mysterious-shenlong-space-plane-recently-launched-on-its-4th-mission-what-is-it-doing-up-there