Tourists wait in safe social distances before entering the Happy Valley Wuhan theme park in Wuhan, central China's Hubei Province, May 19, 2020. Happy Valley Wuhan, a theme park which had been closed due to the COVID-19 outbreak, has partly reopened on Tuesday. Still, there is a limit on the number of visitors and online pre-booking is required. (Xinhua/Xiong Qi)

Tourists are entertained by a panda-costumed staff at the Happy Valley Wuhan theme park in Wuhan, central China's Hubei Province, May 19, 2020. Happy Valley Wuhan, a theme park which had been closed due to the COVID-19 outbreak, has partly reopened on Tuesday. Still, there is a limit on the number of visitors and online pre-booking is required. (Xinhua/Xiong Qi)

Tourists enjoy a roller-coaster ride at the Happy Valley Wuhan theme park in Wuhan, central China's Hubei Province, May 19, 2020. Happy Valley Wuhan, a theme park which had been closed due to the COVID-19 outbreak, has partly reopened on Tuesday. Still, there is a limit on the number of visitors and online pre-booking is required. (Xinhua/Xiong Qi)