I Only Came Down the Mountain to Repay a Favor, So How Did I Become Invincible?

Zhao Ming was the direct heir to the legendary Zhao family, famed for both poison and medicine. He lived in seclusion in the mountains, enjoying the company of beautiful women and keeping out of worldly affairs. Then his master suddenly drove him down the mountain to repay a debt of gratitude. Little did he know that once he descended, he would become invincible, shaking the entire world…