National aerospace scientists give lectures, meet students in Hong Kong 1 2021-06-24 08:24:03Xinhua Editor : Li Yan ECNS App Download Mainland aerospace scientists pose for a photo at the Hong Kong Polytechnic University in Hong Kong, south China, June 23, 2021. (Xinhua/Wang Shen) Mainland aerospace scientists started on Wednesday to give lectures and meet students on Hong Kong campuses. On their agenda is also to witness the inauguration of a lunar soil exhibition slated for Saturday here. The lunar soil was brought back to Earth by the Chang'e-5 lunar probe last December. The six scientists, who joined major aerospace projects including Shenzhou spaceships, Long March rockets and Chang'e lunar probes, were scheduled to visit the Hong Kong Polytechnic University (PolyU), the University of Hong Kong (HKU) and six high schools.