"Boom—"

The moment they stepped into the light door, Du Fei and the others immediately felt a surge of Heaven and Earth Primordial Qi, so rich that it was almost viscous, coming at them. Within this Heaven and Earth Primordial Qi, the Yan Sect's Qi was also extremely dense. Many just took a slow breath, and the expressions on their faces were filled with astonishment! If one could cultivate in such a place, a day here would genuinely equal ten days in the outside ...