China on Monday unveiled regulations on lunar sample management, encouraging international cooperation on studying the samples brought back by the Chang'e-5 probe.

Released by the China National Space Administration (CNSA), the regulations cover general principles for preserving, managing, using, borrowing and returning the lunar samples, as well as information release and research results management of the samples.

According to the regulations, the lunar samples will be generally used for four purposes, namely permanent storage, backup permanent storage, research and public welfare.

The Chang'e-5 probe, comprising an orbiter, a lander, an ascender, and a returner, was launched on Nov. 24, 2020. The return capsule landed in Inner Mongolia Autonomous Region on Dec. 17, retrieving about 1,731 grams of lunar samples.

The CNSA also awarded commemorative plates to the international cooperators including the Argentine National Space Activities Commission, European Space Agency, Namibia Ministry of Higher Education, Training and Innovation, and Pakistan Space and Upper Atmosphere Research Commission, to thank them for their collaboration during the Chang'e-5 mission.