Shanghai's Grand World reopens to the public in Shanghai, March 31, 2017. Built in 1917, Grand World was once the largest comprehensive amusement park in the country. To mark the 100th anniversary, Grand World opened to the public as the nontangible cultural heritage center of the municipality. [Photo/China News Service]

Shanghai's Grand World reopens to the public in Shanghai, March 31, 2017. [Photo/China News Service]

Shanghai's Grand World reopens to the public in Shanghai, March 31, 2017. [Photo/China News Service]

A man shows his ticket after waiting for five hours to become the first visitor to the revitalized Grand World in Shanghai, March 31, 2017.[Photo/China News Service]

Distorting mirrors are hot attractions at Grand World in Shanghai, March 31, 2017. [Photo/China News Service]