(260909) -- HONG KONG, Sept. 9, 2026 (Xinhua) -- John Lee, chief executive of the Hong Kong Special Administrative Region (HKSAR), and students attend a live space lecture of the "Tiangong Class" Hong Kong and Macao Designated Session in Hong Kong, south China, Sept. 9, 2026. TO GO WITH "Hong Kong, Macao students interact with Shenzhou-23 crew from orbit during 'Tiangong Class'" (Photo by Lui Sui Wai/Xinhua)