Introduction to Yangtian Pool: Located at the top of Nanfeng, it is named after standing by the pool and looking up at the blue sky as if it were very close at hand. The pool is a natural stone concave on the rock, with an irregular shape, about 1 meter deep and about 2 square meters of water surface. The water in the pool is clear and clear, never overflowing during floods and never exhausted during droughts. Visitors often marvel at the wonder.