Members of an acrobatic troupe train at a sports center in Zunyi, Southwest China's Guizhou province, Mar. 20, 2020. Wearing facial masks, acrobats carried out rehearsals in preparation for scheduled performance in the United States. (Photo: China News Service/Qu Honglun)

Members of an acrobatic troupe train at a sports center in Zunyi, Southwest China's Guizhou province, Mar. 20, 2020. Wearing facial masks, acrobats carried out rehearsals in preparation for scheduled performance in the United States. (Photo: China News Service/Qu Honglun)

Members of an acrobatic troupe train at a sports center in Zunyi, Southwest China's Guizhou province, Mar. 20, 2020. Wearing facial masks, acrobats carried out rehearsals in preparation for scheduled performance in the United States. (Photo: China News Service/Qu Honglun)

Members of an acrobatic troupe train at a sports center in Zunyi, Southwest China's Guizhou province, Mar. 20, 2020. Wearing facial masks, acrobats carried out rehearsals in preparation for scheduled performance in the United States. (Photo: China News Service/Qu Honglun)

Members of an acrobatic troupe train at a sports center in Zunyi, Southwest China's Guizhou province, Mar. 20, 2020. Wearing facial masks, acrobats carried out rehearsals in preparation for scheduled performance in the United States. (Photo: China News Service/Qu Honglun)

Members of an acrobatic troupe train at a sports center in Zunyi, Southwest China's Guizhou province, Mar. 20, 2020. Wearing facial masks, acrobats carried out rehearsals in preparation for scheduled performance in the United States. (Photo: China News Service/Qu Honglun)

Members of an acrobatic troupe train at a sports center in Zunyi, Southwest China's Guizhou province, Mar. 20, 2020. Wearing facial masks, acrobats carried out rehearsals in preparation for scheduled performance in the United States. (Photo: China News Service/Qu Honglun)