Twenty-three year-old Chen Han, wearing a pair of glasses, is an intern technician who has been working on an inter-city metro project in eastern China since July 2022. In late December, the young graduate was infected with the coronavirus amid a surge of COVID-19 cases in China. Wasting no time to improve himself and build infrastructure for the country’s future, he returned to work soon after his recovery just as many other fearless and resilient Chinese did.