Introduction to the Tongtian Town Ground Pillar: The Tongtian Town Ground Pillar is located on the east bank of Lianchitan. It was built to commemorate the 921 earthquake disaster. The column is ten meters high and is the largest Cochin pottery work in China. It is worth mentioning that within the pillar foundation, there is also an underground palace 1.5 meters high and 0.8 meters wide. Inside the palace is an original Jiaozhi pottery that is the same as the Tongtian Town underground pillar, which is a one-meter-high scaled-down version.