MTL - I Wield a Sword at Hogwarts - Chapter 823

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

The existence of a magician is to understand the truth of the real world. Saleen Metatrin, an ordinary magician, initially wanted to change one’s mind and destiny. During this, he went through many situations and phases in his life.

I just woke up and the beautiful disciple was feeding me medicine. I drank it without any precautions. As a result, when the beautiful disciple came out, I scrolled through my memory and found out...Oh my god, I traveled to another world and became the Supreme Pontiff of the Qian Xunji Spirit Hall?!In the beginning, I encountered a situation where Tang Hao seriously injured me and Bibi Dong was going to kill me in revenge.Fortunately, I activated the Villain Douluo System. As long as I make the righteous miserable, I can continue to become stronger.Tang San, Yu Xiaogang, Tang Hao... your nightmare is approaching.

Lin Fan acquired the Sign-in System that led him on the path of the life of a god-level nouveau riche.