Why is the chinese government so interested in space exploration

Publicity and Territorial rights.

Explanation:

It shows the world they are technologically advanced enough to fly into space.  Only powerful and profitable countries can do this.

All the countries know that eventually, technology will advance to a sufficient point where colonies on other moons/planets will be possible.  By building a space program they put themselves on the front lines to claim entire worlds/resources in their name.

if you answer my question i will answer yours