Two of China's prominent scientists in satellite navigation and lunar exploration gave lectures at the Hong Kong Polytechnic University on Thursday morning.

Xie Jun, deputy chief designer of the BeiDou Navigation Satellite System (BDS), shared his experience with more than 100 students, scientific researchers and scholars. He is also the chief designer of the system's third-generation satellite.

The BDS is independently constructed and operated by China. Its deployment has been completed with the last satellite launched in June last year. China officially commissioned BDS on July 31, 2020, opening the new BDS-3 system to global users.