Douluo's myth of Haotian

The technique passed down to him by Sword Spirit Xiaojiu is called the Hunyuan Immortal Code, which is a supreme book that can be used to cultivate to the realm of the Immortal Emperor.

Through the introduction of this exercise book, he finally understood the realm of cultivation.

Acquired, innate, Yuanshen Zhenjun, Yuhua Tianzun, these are the four realms before becoming an immortal...