Manga wo Yomeru Ore ga Sekai Saikyou ~Yometachi to Sugosu Ki mama na Seikatsu~ - Chapter 109 – The Messenger of Happiness

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

That day the sun set and never rose again...............Author Spotlight:Chen Dong — WebNovel's legendary titan behind global phenomena like 'Perfect World', 'The Sacred Ruins' and'World of Longevity‘— returns with his most ambitious saga yet. Crowned among the platform's all-time greats, this master of epic worldbuilding has dominated fiction charts for many times, with multiple novels adapted into hit games. When this trailblazer drops a new book, millions brace for sleepless nights.

Due to a bug in the game, Ren Changsheng accidentally left the game idle for ten million years.As he watched the endless stream of experience points, all Ren Changsheng could think was, 'I really do not want to level up!'