Introduction to the Testing Pool: There are two pools eroded by water on the huge bluestone beside Fenglong Trough. The two pools are 1 meter apart. The big one is shaped like a red peach, and the water depth is about 1 meter. The small one is 1 meter apart. It is shaped like a flat peach and the water is about 4 meters deep. These are the Big Test Heart Pond and the Small Test Heart Pond. The water in the pool is formed by the impact of the upstream water. It does not overflow in rainy days and does not dry up in dry days. It is clear and blue to the bottom. It is said that these two ponds are particularly spiritual. Whether they are lovers or close friends, they will reveal their true feelings under the reflection of the pure and clear water.