Introduction to the Heart Sutra Bell Tower: The most perfectly preserved of the Shisi Temple monuments is the Heart Sutra Bell Tower. It was built in the Ming Dynasty. It has a wooden structure with three floors and three floors. It is a pavilion-style building on the top of the mountain. , the building is supported by four large pillars that embrace each other, connected by a strict mortise and tenon structure and brackets, which is quite a spectacle. The Heart Sutra bronze bell once hung on the third floor, weighing 800 kilograms, with the full text of the Buddhist Heart Sutra cast on it. The sound of the bell can be heard for more than 30 miles.