The valley where Sima Mo's cave was located was filled with origin energy. This origin energy formed a vortex that hovered in the valley, beneath which Wang Lin sat.
The Seven-Colored Realm was mysterious and fraught with danger. Yet, for Wang Lin, these conditions presented a great opportunity.
After absorbing Cang Song's memories, Wang Lin gained a deeper understanding of the Seven-Colored Realm. He learned the purpose of the liquid in the jade bottle and discovered how to exit this place.
Had he not advanced from the early stage of Nirvana Cleanser to the mid-stage, Wang Lin might have hesitated. The knowledge gained from Cang Song's memories made the realm's dangers clearer to him. More importantly, he became aware of a mountain deep within the area.