Members of a medical team from Beijing Tiantan Hospital under the Capital Medical University to aid Hebei in the fight against COVID-19 are seen in Beijing, capital of China, Jan. 9, 2021. A medical team from Beijing Tiantan Hospital under the Capital Medical University was assigned to Nangong City in Hebei Province to help with nucleic acid testing on Saturday. The team consists of 20 members with 5 sets of testing equipment, 50,000 nucleic acid testing kits and protective supplies for 30 days. (Xinhua/Chen Zhonghao)

Members of a medical team from Beijing Tiantan Hospital under the Capital Medical University to aid Hebei in the fight against COVID-19 are seen in Beijing, capital of China, Jan. 9, 2021. A medical team from Beijing Tiantan Hospital under the Capital Medical University was assigned to Nangong City in Hebei Province to help with nucleic acid testing on Saturday. The team consists of 20 members with 5 sets of testing equipment, 50,000 nucleic acid testing kits and protective supplies for 30 days. (Xinhua/Chen Zhonghao)

Members of a medical team from Beijing Tiantan Hospital under the Capital Medical University to aid Hebei in the fight against COVID-19 are seen in Beijing, capital of China, Jan. 9, 2021. A medical team from Beijing Tiantan Hospital under the Capital Medical University was assigned to Nangong City in Hebei Province to help with nucleic acid testing on Saturday. The team consists of 20 members with 5 sets of testing equipment, 50,000 nucleic acid testing kits and protective supplies for 30 days. (Xinhua/Chen Zhonghao)

Staff members transfer the supplies of a medical team from Beijing Tiantan Hospital under the Capital Medical University to aid Hebei in the fight against COVID-19 in Beijing, capital of China, Jan. 9, 2021. A medical team from Beijing Tiantan Hospital under the Capital Medical University was assigned to Nangong City in Hebei Province to help with nucleic acid testing on Saturday. The team consists of 20 members with 5 sets of testing equipment, 50,000 nucleic acid testing kits and protective supplies for 30 days. (Xinhua/Chen Zhonghao)

Members of a medical team from Beijing Tiantan Hospital under the Capital Medical University to aid Hebei in the fight against COVID-19 are seen in Beijing, capital of China, Jan. 9, 2021. A medical team from Beijing Tiantan Hospital under the Capital Medical University was assigned to Nangong City in Hebei Province to help with nucleic acid testing on Saturday. The team consists of 20 members with 5 sets of testing equipment, 50,000 nucleic acid testing kits and protective supplies for 30 days. (Xinhua/Chen Zhonghao)

Members of a medical team from Beijing Tiantan Hospital under the Capital Medical University to aid Hebei in the fight against COVID-19 pose for a photo with a colleague in Beijing, capital of China, Jan. 9, 2021. A medical team from Beijing Tiantan Hospital under the Capital Medical University was assigned to Nangong City in Hebei Province to help with nucleic acid testing on Saturday. The team consists of 20 members with 5 sets of testing equipment, 50,000 nucleic acid testing kits and protective supplies for 30 days. (Xinhua/Chen Zhonghao)

Members of a medical team from Beijing Tiantan Hospital under the Capital Medical University to aid Hebei in the fight against COVID-19 shake hands with people before departure in Beijing, capital of China, Jan. 9, 2021. A medical team from Beijing Tiantan Hospital under the Capital Medical University was assigned to Nangong City in Hebei Province to help with nucleic acid testing on Saturday. The team consists of 20 members with 5 sets of testing equipment, 50,000 nucleic acid testing kits and protective supplies for 30 days. (Xinhua/Chen Zhonghao)

Members of a medical team from Beijing Tiantan Hospital under the Capital Medical University to aid Hebei in the fight against COVID-19 prepare to depart in Beijing, capital of China, Jan. 9, 2021. A medical team from Beijing Tiantan Hospital under the Capital Medical University was assigned to Nangong City in Hebei Province to help with nucleic acid testing on Saturday. The team consists of 20 members with 5 sets of testing equipment, 50,000 nucleic acid testing kits and protective supplies for 30 days. (Xinhua/Chen Zhonghao)

Medical supplies of a medical team from Beijing Tiantan Hospital under the Capital Medical University to aid Hebei in the fight against COVID-19 are seen in Beijing, capital of China, Jan. 9, 2021. A medical team from Beijing Tiantan Hospital under the Capital Medical University was assigned to Nangong City in Hebei Province to help with nucleic acid testing on Saturday. The team consists of 20 members with 5 sets of testing equipment, 50,000 nucleic acid testing kits and protective supplies for 30 days. (Xinhua/Chen Zhonghao)