As COVID reemerges in China, healthcare workers take comprehensive measures to contain its spread. In this video, Xiabing shows us China's strategy of testing entire cities' populations, issuing health codes, classifying geographic areas by risk level down to the individual neighborhood, and deploying third doses of their vaccines. Ultimately, Xiabing is confident China will control the spread, case numbers remain low, and China plans to reopen its international borders once enough of its population has immunity.