MKS sports a PLA doctor, got a shot to boost immunity before leaving for Wuhan to help battle COVID-19 in Jan 2020. The PLA dispatched more than 4,000 medical staff during the coronavirus outbreak in Wuhan in 2020. Editor: Feng Qingyin/GT Graphic: Xu Zihe/GT" />When duty calls: Liu Li, a PLA doctor, got a shot to boost immunity before leaving for Wuhan to help battle COVID-19 in Jan 2020. The PLA dispatched more than 4,000 medical staff during the coronavirus outbreak in Wuhan in 2020. Editor: Feng Qingyin/GT Graphic: Xu Zihe/GT