Summary:

- China is opening its planned 2028 Mars sample return mission to international cooperation, according to the China National Space Administration (CNSA).
- The mission aims to collect and return samples from Mars to Earth, which would be a major scientific achievement and build on China's successful Tianwen-1 Mars orbiter and rover mission.
- By inviting international participation, China is signaling its willingness to collaborate on this ambitious endeavor, which could lead to groundbreaking discoveries about the Red Planet.