I, a Useless Person, Suddenly Gained the Power of Millions of Years of Cultivation.

(You can use your invincible cultivation at any time, but your body needs to be upgraded! Don't suppress it, don't feel depressed.)

The good-for-nothing Chen Changan accidentally gained 999 billion years of invincible cultivation!

But because his body is too weak, using his invincible cultivation will deduct his lifespan???

So Chen Changan started a side business in the small clinic.

A medicinal herb that can extend your life by ten years can help you kill a demon lord.

A medicinal herb with a lifespan of twenty years can kill an Immortal Emperor.

A body-building technique that increases lifespan by fifty years, and a talisman that allows one to cultivate to the level of an Immortal Emperor.

……

A few years later, Chen Changan stood at the door of the small clinic. Looking at the creatures from all over the world kneeling in submission at the door, he sighed deeply.

If I say that I am just a small doctor who wants to cultivate my body and achieve immortality, would you believe me?