Introduction to Tongzhen Rock: Tongzhen Rock was built in the Sui Dynasty. It was originally a copper stone rock and is a provincial cultural relic protection unit. Tongzhen Rock is also known as "Liu Sanmei's singing platform". According to legend, during the Jinglong period of Tang Dynasty, Liu Sanmei and her grandfather from Gui County, Guangxi came here to spread songs from Guangxi and became immortals. Therefore, this place is also called "Tongzhen Rock". There is still a singing platform in the rock. and the tomb of Liu Sanjie’s grandfather.