Eternal Life Begins with Bug-Refining

There is a way in the world here, and the manifestation of the way is a Gu. When people practice, they cultivate the energy of heaven and earth all over their body to drive away Gu insects and display supernatural powers. Traveling through a year, Chen Qing finally discovered his specialness on the day he contracted the first Gu worm. He was able to see through everything about the Gu worm… So, he started to fight steadily, step by step on the road to longevity. - Description from novelcodex.org