MTL - Pokemon Dark Giant - v3 Chapter 4 : Purpose of travel

Under everyone's gaze, her pregnant sister came to force a marriage, making her the butt of the joke, after being cheated on.When she was at her wit's end, she met him ——Jun Mochan, the business tycoon.He said: “Marry me, I won't betray you.”In order to shut off the wagging tongues and avoid becoming a bargaining chip in a family alliance,She said: “Okay”But, wasn't it agreed that it would be a fake marriage?He loves her deeply. The whole world knows it, only she doesn't.

When Peter is transported to a brutal system-driven world, where stats, skills, and paths to power are granted upon turning eighteen... He gets nothing.Thrown into a military training regime where the weak are discarded and the strong survive, Peter should have been erased.Alongside Thea, a fierce warrior, and Elric a determined healer, Peter claws his way forward. Creating and rediscovering the secrets of Cultivation and World Force.But as he defies the rules of the world, the world starts to notice.

A tree of 10,000 flowers, the world is the door.
The spells change a lot, but the hearts of the people are unchanged.

- Description from Uukanshu translation

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