Staff members carry medical supplies to be transported to Wuhan in Nanjing, East China's Jiangsu province, Jan 25, 2020. (PHOTO / XINHUA)

A relative encourages the medical staff at Nanjing South Railway Station in Nanjing, East China's Jiangsu province, Jan 25, 2020. (PHOTO / XINHUA)

Medical staff prepare to board train at Nanjing South Railway Station in Nanjing, East China's Jiangsu province, Jan 25, 2020. (PHOTO / XINHUA)

Crew members of a military transport aircraft pose for a group photo at Xi'an Xianyang International Airport in Xi'an, capital of Northwest China's Shaanxi province, Jan 24, 2020. (PHOTO / XINHUA)

A medical staff from Air Force Medical University prepares for leaving for Wuhan in Xi'an, capital of Northwest China's Shaanxi province, Jan 24, 2020.(PHOTO / XINHUA)

A medical staff member from Guangdong province attends a training in Wuhan, Central China's Hubei province, Jan 25, 2020. (PHOTO / XINHUA)

A medical staff member from Guangdong province speaks during a training in Wuhan, Central China's Hubei Province, Jan 25, 2020. (PHOTO / XINHUA)

Medical staff members from Guangdong province attend a training in Wuhan, Central China's Hubei province, Jan 25, 2020. (PHOTO / XINHUA)