In preparation for scheduled tour in June this year, Shanghai Ballet dancers wearing masks practice in a dance studio in Shanghai amid the coronavirus outbreak, Mar. 2, 2020. (Photo: China News Service/Tang Yanjun)

In preparation for scheduled tour in June this year, Shanghai Ballet dancers wearing masks practice in a dance studio in Shanghai amid the coronavirus outbreak, Mar. 2, 2020. (Photo: China News Service/Tang Yanjun)

In preparation for scheduled tour in June this year, Shanghai Ballet dancers wearing masks practice in a dance studio in Shanghai amid the coronavirus outbreak, Mar. 2, 2020. (Photo: China News Service/Tang Yanjun)

In preparation for scheduled tour in June this year, Shanghai Ballet dancers wearing masks practice in a dance studio in Shanghai amid the coronavirus outbreak, Mar. 2, 2020. (Photo: China News Service/Tang Yanjun)

In preparation for scheduled tour in June this year, Shanghai Ballet dancers wearing masks practice in a dance studio in Shanghai amid the coronavirus outbreak, Mar. 2, 2020. (Photo: China News Service/Tang Yanjun)