Listen to SupChina editor-at-large and Sinica podcast host Kaiser Kuo read this article. On January 25, 2020, as the city of Wuhan headed into the world’s first Covid-19 lockdown, the Chinese billionaire Wang Jian arrived on one of the last incoming trains. Flanked by a small entourage of younger scientists, Wang exited the station wearing a mask, a light puffy jacket and a backpack. Thousands were fleeing the river port metropolis. But Wang came ready to work.  During the SARS