An Tongyi sat down cross-legged and eyes tightly shut in the cultivation chamber, droplets of sweat could be seen on his forehead as he tried to achieve a balance in his core, he held on for as long as he could but less than sixty minutes later a clash occurred and he felt an intense burning sensation, his face began to glow a bright red, he gritted his teeth and did his best to prevent himself from screaming out loud, the pain was truly unbearable!