Black Tortoise God of War - Chapter 5

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

Life is unpredictable. Her husband loved her stepsister, deposed her as Empress and even forced her son to death. In that Cold Palace, she was forced to drink poisonous wine. So in the next lifetime, she made a promise to never do good deeds and help others, to never step into the palace and to never become the Empress!

superhuman powers awakened and the world changed, yet Jade remained as he was—the ever so heedless, unbothered, emotionless, and weird guy manning the cash register.But some people deemed him lucky because he seemed to be unaffected by all those happenings. But would they still believe that when Jade came home one day from his night shift, tired and hungry, to find a dungeon gate right inside his house?The worst thing that could ever happen to him was get sucked in that gate, however, instead of the gate, strange Seekers are sucking up to him instead.Jade: Why is this happening?!Seeker 1: Help me go back to my world and I can give you everything you wish for.Seeker 2: I don’t care about going back to that damned world, so can you just let me stay here with you?Seeker 3: Jade, honey, you’re the best Minder! I need you, so come with me to my world.And so on… these Seekers are all lunatics forcing him to help them go back to their respective worlds! But how can Jade do that, when all of them were just mere characters from books?!Now, what will Jade do?