Living in the deep palace

This is a world of demons. Su Chen traveled through time and got the seed of immortality, becoming a little black eunuch in the Daliang Palace. In order to obtain immortality and protect immortality, he began his path of cultivation.
"As time goes by, I don't know how many emperors, heroes, martial arts masters, and immortals and demons have been buried here. I am the only one who sits and watches the wind and clouds, moving forward in the sand of history..."
The first realm of immortality is to ripen the precious medicine.
The second realm of immortality, changing shape and appearance.
……
Just like that, under the hibiscus tree, he attended the funeral of his world-famous friend, the 900-year-old Dongchang, on a rainy night. With one sword, he shocked the world, and the world knew that this useless man who had not been out of the library for ten years was actually a rare evil genius. In the pharmacy, he stirred up the storm again for the kind old man who had accompanied him for three years, stirring up the world and making the world wake up from their dreams and remember this world's number one traitor...
……
Immortality is a lonely road, maybe.
But for thousands of years, the young man who walked out of the library has been stirring up the world! He buried the sky, the earth, and all living things! Gods, ghosts, demons, and monsters should also call him the Demon Dao Ancestor!