Interior of Wanfotang grottoes scenic spot is seen in Yixian County, Jinzhou City of northeast China's Liaoning Province, June 12, 2020. The grottoes have a history of more than 1,500 years.Photo:Xinhua

Interior of Wanfotang grottoes scenic spot is seen in Yixian County, Jinzhou City of northeast China's Liaoning Province, June 12, 2020. The grottoes have a history of more than 1,500 years.Photo:Xinhua

People visit the Wanfotang grottoes scenic spot in Yixian County, Jinzhou City of northeast China's Liaoning Province, June 12, 2020. The grottoes have a history of more than 1,500 years.Photo:Xinhua

Interior of Wanfotang grottoes scenic spot is seen in Yixian County, Jinzhou City of northeast China's Liaoning Province, June 12, 2020. The grottoes have a history of more than 1,500 years.Photo:Xinhua

Exterior of Wanfotang grottoes scenic spot is seen in Yixian County, Jinzhou City of northeast China's Liaoning Province, June 12, 2020. The grottoes have a history of more than 1,500 years.Photo:Xinhua

People visit the Wanfotang grottoes scenic spot in Yixian County, Jinzhou City of northeast China's Liaoning Province, June 12, 2020. The grottoes have a history of more than 1,500 years.Photo:Xinhua