Lin Feng's body felt as if it had been electrified, and he stood there in a daze. He watched as the stone wall slowly closed, and the silhouette of Old North disappeared.,The pure essence of heaven and earth contained within the Essence Stone can be directly absorbed by those at the Spirit Martial realm, enhancing their cultivation efficiency. It is extremely precious.,"There must be some secret behind this door. Perhaps the ancient hall's owner left clues within,可惜 I simply cannot open it."。