A guide wearing a mask and a veil welcomes tourists at the Qingming Shanghe Park in Kaifeng, Central China's Henan province, on March 13, as the park reopened on the same day. (Photos: Sipa)

Staff members wearing masks and veils welcome tourists at the Qingming Shanghe Park in Kaifeng, Central China's Henan province, on March 13, as the park reopened on the same day.

Staff members wearing masks and veils welcome tourists at the Qingming Shanghe Park in Kaifeng, Central China's Henan province, on March 13, as the park reopened on the same day.

A staff member wearing a mask and a veil puts on a performance at the Qingming Shanghe Park in Kaifeng, Central China's Henan province, on March 13, as the park reopened on the same day.

Staff members wearing masks and veils put on a performance at the Qingming Shanghe Park in Kaifeng, Central China's Henan province, on March 13, as the park reopened on the same day.

Staff members wearing masks and veils welcome tourists at the Qingming Shanghe Park in Kaifeng, Central China's Henan province, on March 13, as the park reopened on the same day.

Staff members wearing masks and veils welcome tourists at the Qingming Shanghe Park in Kaifeng, Central China's Henan province, on March 13, as the park reopened on the same day.

Staff members wearing masks and veils put on a performance at the Qingming Shanghe Park in Kaifeng, Central China's Henan province, on March 13, as the park reopened on the same day.

A staff member wearing a mask and a veil welcomes tourists at the Qingming Shanghe Park in Kaifeng, Central China's Henan province, on March 13, as the park reopened on the same day.

A guide wearing a mask and a veil welcomes tourists at the Qingming Shanghe Park in Kaifeng, Central China's Henan province, on March 13, as the park reopened on the same day.