Introduction to the horse-tying stone: There is a stone pillar on the platform with the inscription "horse-tying stone". Regardless of whether they are great writers, great scholars, emperors or generals, "military officers are tied to their horses and civil servants are dismounted from their sedan chairs" to show pious respect. The words on the stone pile were engraved in the Tang Dynasty. They were regarded as the "Four Olds" and were blocked and abandoned in the mountains and forests. Later people found it again, carefully restored it, and treated it like a treasure.