Xu Mu was anxious. He didn't know what caused this suction, nor whether he could withstand its assault. He began to question whether he should go on, but there was no way back.
Just as Xu Mu was about to give up, a powerful light suddenly radiated from deep within the cave. The brightness illuminated the entire cave in an instance, almost blinding Xu Mu.
Following that, an immense force emerged from the light, lifting Xu Mu's body instantly. He felt as though his body was growing heavier, as if both his body and soul were about to be crushed.
The light and the force vanished in an instant, and Xu Mu found himself back on the ground. His body felt completely drained, but his soul felt nourished, filled with newfound strength and vigor.
Xu Mu realized he had passed this round of tests.