Introduction to Koi Rock: Koi Rock is surrounded by dense maple forests. Every autumn, the maple forest looks like fire. Under the reflection of the morning glow and sunset, when viewed from a distance, the entire rock looks like a koi carp shining with golden light. , hence the name. There are many cliff inscriptions from the Tang, Song and Ming Dynasties and ancient bridges from the Song Dynasty left on the mountain. It has rich cultural heritage and is the source of Changle's cultural heritage. It was once the location of Decheng Jingshe in the Tang Dynasty, Longfeng Academy in the Song Dynasty, and Wenfeng Academy in the Ming Dynasty. Zhu Xi once lectured here, and the five brothers Lin Shensi, the first thinker of the Tang Dynasty, studied here.