Introduction to Shizhongshan Grottoes: Shizhongshan is a branch peak in the south of Shibaoshan. It is named after the stone bell on the mountain. The Shizhongshan Grottoes are the largest group of grottoes in Yunnan Province and the earliest grottoes in Yunnan. They have a history of more than 1,000 years and are well preserved to this day, making them a wonder of national culture. In 1961, the grotto was listed as one of the first batch of key cultural relics protection units in the country by the State Council.