Introduction to Taiqing Palace: Also known as the Front Palace, with Taiji Hall as the center, there are the ruins of Laozi's cattle ranch in the east, the ruins of Yinyang Mountain in the west, and the Jiubu Well in the middle; there is a statue of Laozi in the main hall, and there is a tall statue on the side of the hall. The 1.5-meter-long iron pillar with a diameter of about 25 centimeters is a symbol of Laozi's post-revolutionary history.