89-year-old railway expert’s ceaseless quest for innovation
A photo shows Wang Qichang (right) having a discussion with a technician at a sound barrier production facility, Nov 4, 2021. [Photo/Xinhua] CHENGDU — Many scientists score major achievements in the prime of their lives, but for innovators like Wang Qichang, being an octogenarian might mean the start of a new pursuit. The 89-year-old professor…