MTL - Shoujo Grand Summoning - ~ 1943 defeat! Can't win? ...

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

Liu Yan, an ordinary office worker from Earth, unexpectedly traveled to a strange world.

The heroes of the ages are on the side, embarking on a journey to conquer the heavens.

- Description from novelbuddy

In the 41st millennium, darkness rages across the galaxy!The Imperium of Man has lost half of its territories.Millions of planets have fallen victim to the invasion of Chaos!Famine, crime, and heretical cults spread like wildfire…On the planet of Urth, located in the Imperium's dark zone, extreme suffering is taking place.Fortunately, the savior, Eden, has arrived!He awakens to the essence of the Warp and leads his people to prosperity!Starting from a small, broken territory:Farming, building armies, managing internal affairs, unifying the planet, creating Space Marines, forming a fleet, embarking on a grand expedition...When the Lord Regent leads the Imperial fleet to reclaim lost lands, he gazes upon the flourishing star systems and the sky-darkening armada, then looks back at his own ragged ships and is left dumbfounded...Who is the true Imperium?[Raw: 官场职场 > 战锤：从行星总督开始]

In her past life, Xia Chu lost her virginity before marriage and was scorned by her family as a wanton woman, forced to marry an old widower with a limp. Her aunt and mother died one after another because of her. Fleeing alone to the south to work, she suffered a hard life and eventually died tragically at the hands of a scoundrel.Reborn, she is determined to protect those who love her and those she loves, to rewrite destiny. Those who framed her, she will make them suffer the consequences; those who forced her, she will make them kneel and beg for mercy; and those who killed her, she will make them wish they were dead!By the way, that tall, stoic man with good looks, loyalty, and skills, I might as well marry you since you’ve got it all.