during the period when Xie Xuan was injured and in a coma, he broke through the secret environment unconsciously, which made Xie Xuan laugh and cry.

but if you think about it carefully, it's easy to explain.

Xie Xuan's body before him has been infinitely close to the innate state. He forged the whole body with the energy of heaven and earth in the stone, turning the whole body into a polymer of colorful energy. Whether it's the hardness or the induction to the force of heaven and earth, it has reached the level of the natural world.

after that, Xie Xuan made the third change of the secret method...