America 1919 - Chapter 173 105. The situation began to escalate.

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

[Post-apocalyptic + No romantic pairings + Overpowered system + Management + Please read the bottom of the synopsis + Initially low-priced, enter at your own discretion]Gu Wanyin never imagined that not only would she transmigrate, but she’d end up in a post-apocalyptic world! Opening her eyes to find herself surrounded by zombies with only two pitifully thin adorable children by her side, Gu Wanyin thought: This is the end of me!System: Impossible, absolutely impossible!After binding to the most powerful hotel system in the post-apocalyptic world, Gu Wanyin embarked on a delightful journey of raising children and managing a hotel. As the hotel’s guests increased, so did her rewards! But could someone explain to her why a hotel that unlocked noodle shops, hot pot restaurants, and buffets was understandable, but why did it also have KTV, movie theaters, libraries, amusement parks, hot springs, schools, and hospitals? And even a zombie-killing simulation training camp? Wait, there’s even more…It seems she’s destined to transform this hotel into the only paradise in the post-apocalyptic world!

Damian, a Centurion of the Punishment Unit of the Baroque Kingdom. “Damn it.” Just once. If I were given just one more chance… ‘I would have truly conquered the battlefield with these guys.’ At the age of 30, he closed his eyes on a nameless battlefield. But when he opened them, he found himself back 17 years in the past. And this time, he had a perfectly functioning mana core that could wield magic. ‘This time.’ I will rise higher than anyone else. I won’t be swept away by the turbulent times. ‘I will conquer.’ Damian, who has returned to the past, wields his spear toward the world.

Within the Immortal Realm, there were nine thousand major realms, with three thousand at the top, three thousand in the middle, and three thousand at the bottom, along with countless minor realms.