"This hall should be where they train collectively," Xu Tui said after carefully sensing the surroundings.
"However, this concentration is a little useless." Li Zheng sensed for a moment and said, "The concentration is very low. It barely reaches the level of cultivation. Cultivating here for a night without sleep might only have an effect of 0.5 grams of Origin Crystals."
Xu Tui looked at them and probed downward with his mind power. A few minutes later, he suddenly said, "I feel that the concentration of energy emanating from here is slowly becoming denser."
"Indeed!" Luo Murong confirmed.
Xu Tui suddenly thought of the first night he came here. He had sensed Origin Energy in the wind. Would the concentration of energy here also increase with the sudden drop in the temperature outside?