Peerless Tangmen: I have both medicine and poison

In his previous life, he was the King of Ten Thousand Demons and Snakes. Once he crushed the void, he unfortunately fell and reincarnated. In this life, he was born in the Douluo Continent, inheriting the glory of the Dugu family and the Ye family thousands of years ago.The Dou Ling Empire started, spread the world with alchemy, the power shook the world, and the monster came to the planet. (PS: don't tear down CP, don't grab opportunities, self-consistent logic, don't lick Tang San, don't know the plot of the original drama, don't transform into a dragon)