The Shanghai Science Hall recently celebrated National Science Popularization Day with a variety of science activities for children. The event featured hands-on experiments like anesthetizing zebrafish, drone races, observing frog blood cells, and exploring light polarization. Additionally, the venue boasts a descendant of Newton's legendary apple tree, adding a touch of history. The 16 districts of Shanghai introduced 'science popularization maps' to guide residents to local science venues. Each district has its unique theme, such as aerospace in Minhang, green initiatives in Hongkou, and facilities in Zhangjiang Science City. Wu Guanghui, the chief designer of China's C919 aircraft, discussed the future of civil aviation technology. China's aviation market is projected to need over 40,000 new aircraft in the next two decades, with a significant portion destined for China. Wu highlighted the advancements in electric propulsion, renewable aviation fuels, and blended wing-body designs. Notably, he mentioned the exploration of hydrogen-powered narrow-body aircraft, considering their environmental impact. Adjusting flight altitudes may be necessary to mitigate this impact. Overall, the event showcased a blend of fun science activities for children and insights into the future of aviation technology.