Hong Kong’s first astronaut Lai Ka-ying has conducted a live lesson for students of her alma mater from the Tiangong space station, showing them how chicken wings are cooked in zero gravity and how she locates the city’s lights from the darkness of space.In a livecast to teachers and students of Tsuen Wan Public Ho Chuen Yiu Memorial College on Wednesday that was also streamed at other campuses across Hong Kong and Macau, Lai offered a glimpse of life in orbit and the experiments her team...