Hong Kong’s first astronaut, Lai Ka-ying, will deliver a live lesson from space to students and teachers at her alma mater on Wednesday morning, with the 90-minute event broadcast to campuses across the city and streamed live on television. Lai and her two fellow Shenzhou-23 crew members – mission commander Colonel Zhu Yangzhu and Zhang Zhiyuan – will take part in the “Tiangong Class” at Tsuen Wan Public Ho Chuen Yiu Memorial College. Representatives from the youth sector and innovation and...