Introduction to the "Heart Sutra" Cave: The "Heart Sutra" Cave is located in the northeast of Wu Family Temple. In the early years of Emperor Daizong's reign in the Tang Dynasty, Yan Zhenqing was the governor of Lizhou and wrote a volume of the Heart Sutra, which was engraved here, so it is commonly known as the cave where the Heart Sutra was written. There are statues in the cave area where the Heart Sutra was written, distributed on three sides of the boulder, with a total of 19 niches.