In preparation to deliver a correct and rapid response to a possible epidemic this winter and next year's spring, a nucleic acid testing exercise was carried out at Laoshan street in Beijing's Shijingshan district on Friday. The waiting area was equipped with a temperature measurement area and one-meter line to ensure the protection of waiting personnel. The exercise site was also equipped with facilities for different weather conditions and provided a convenient channel for the elderly, children and the pregnant. The site can complete tests for 42,100 people within 5-7 days. Photos: Li Hao/GT