The Holy Son of the Demon Sect, Mending Heaven and Becoming a Saint

[Classical Xianxia] [No heroine] [Demon cultivator] [Kill decisively, just to become a saint] There are seven demon sects in the Southern Wilderness Continent. Leng Yuan, a giant of the demon sect, died during a great tribulation and was reincarnated into a young outer disciple of the Blood Killing Sect who was killed by his fellow sect. After reincarnation, Leng Yuan lost everything, except for his tenacious Taoist heart that had practiced Taoism for thirteen thousand years. In addition, there was a top-notch magic method created by him - the Heaven-Building Creation Technique! From a small demon, he quickly grew into a new generation of demon giant. In this life, gods and demons cannot stop him, and even the catastrophes of heaven and earth cannot stop him from becoming a saint!