Aerial photo taken on July 22, 2018 shows the scenery of Huanghai National Forest Park in Dongtai city, East China’s Jiangsu province. [Photo/Xinhua]

Tourists take a sightseeing bus to visit the Huanghai National Forest Park in Dongtai city, East China’s Jiangsu province, July 21, 2018. [Photo/Xinhua]

Aerial photo taken on July 22, 2018 shows the scenery of Huanghai National Forest Park in Dongtai city, East China’s Jiangsu province. [Photo/Xinhua]

Tourists visit the Huanghai National Forest Park in Dongtai city, East China’s Jiangsu province, July 21, 2018. [Photo/Xinhua]

Aerial photo taken on July 21, 2018 shows the scenery of Huanghai National Forest Park in Dongtai city, East China’s Jiangsu province. [Photo/Xinhua]

Tourists ride at the Huanghai National Forest Park in Dongtai city, East China’s Jiangsu province, July 21, 2018. [Photo/Xinhua]