Since the north and south slabs have been artificially mined since the north and south dynasties, Changyu, which has a history of more than 1,500 years, is like a sky. These stone slabs left by the trend are like ancient bells, like pots, or like barrel walls, or like giant beasts. The tuff in the tuff is cut into a corridor, the skylight is sky-high, the stone suspension bridge, the stacking is very unpredictable. Some stone tuffs are isolated, some are connected, some are circular, some are facing off, deep and secluded, majestic and dangerous, and the tuff is spectacular!