Liu Guangyao (1st R, back) and Qiao Bing (2nd R, back) pose for a group photo with their teammates before setting off for Wuhan in Hubei Province, in Zhengzhou, central China's Henan Province, Feb. 2, 2020. Liu Guangyao and Qiao Bing, both medical workers born in the 1990s, have been in love for more than 2 years. During the outbreak of coronavirus, they signed up for the medical team to aid the coronavirus control efforts in Hubei. Before setting off, they cheered for each other and promised to get married once they come back to Henan. (Xinhua/Li An)