Visitors watch a night performance in Yanzhou ancient city in Meicheng Township, Jiande City of east China's Zhejiang Province, on May 2, 2021. The ancient city received a total of 114,000 visitors on Saturday and Sunday. (Xinhua/Xu Yu)

Aerial photo taken on May 2, 2021 shows the night view of Yanzhou ancient city in Meicheng Township, Jiande City of east China's Zhejiang Province. The ancient city received a total of 114,000 visitors on Saturday and Sunday. (Xinhua/Xu Yu)

Aerial photo taken on May 2, 2021 shows the night view of Yanzhou ancient city in Meicheng Township, Jiande City of east China's Zhejiang Province. The ancient city received a total of 114,000 visitors on Saturday and Sunday. (Xinhua/Xu Yu)

Visitors watch a night performance in Yanzhou ancient city in Meicheng Township, Jiande City of east China's Zhejiang Province, on May 2, 2021. The ancient city received a total of 114,000 visitors on Saturday and Sunday. (Xinhua/Xu Yu)

Visitors participate in a camping event in Yanzhou ancient city in Meicheng Township, Jiande City of east China's Zhejiang Province, on May 2, 2021. The ancient city received a total of 114,000 visitors on Saturday and Sunday. (Xinhua/Xu Yu)

Visitors watch a night performance in Yanzhou ancient city in Meicheng Township, Jiande City of east China's Zhejiang Province, on May 2, 2021. The ancient city received a total of 114,000 visitors on Saturday and Sunday. (Xinhua/Xu Yu)