My Shadow Monarch's System - Chapter 15: Death Dealer.

Qin Ran just wanted to cultivate immortality, refine pills, and live a carefree life as an immortal world slacker. But a genius female disciple just had to get clingy, insisting that he take her as a disciple. Not only that, she was always making advances on him, thoroughly disrupting his peaceful slacker life…

【Matrix Survival Game】

All players have the same initial resources.

Each person can explore ten rooms per day, and there may be dangers and supplies in the rooms.

Do your best to survive.

…

After reading all the introductions, Li Zheng heard a voice in his ear: The daily treasure chest is being drawn, and the quality is random…

Congratulations, you have drawn a silver treasure chest and obtained a silver-quality blueprint “Normal Edition Detector”, along with several supplies.

Congratulations, you have drawn a bronze treasure chest and obtained a bronze-quality blueprint “Air Purifier”, with some supplies.

Congratulations, you have drawn the white treasure chest and obtained the platinum quality blueprint “Ion Cutting Blade”, “Intermediate Gene Culture Solution Recipe”, “TJP Type Shield Blueprint”, and a lot of materials.

…

Congratulations, you have drawn the super god-level treasure chest, and the reward……

Li Zheng looked at the brilliant treasure chest in front of him and rubbed his hands together excitedly.

- Description from novelbuddy

On the dawn of a fresh New Year, an ominous figure emerged, shrouded in a guise of an angel but harboring the malevolence of a devil. With a chilling voice, it proclaimed, [Every month, you humans will be thrust into a perilous quest. Your survival hinges on overcoming 20 grueling rounds.]Suddenly, I found myself ensnared in this dangerous survival game, a grotesque merry-go-round where every turn carried the stench of death. Yet, I was not without any defenses. I possessed an unusual power: the power to regress 100 times, a chance to rewrite my fate.I stand on the precipice of my final regression, and I swear, ‘This time, I will conquer it. I will emerge victorious.’I’m no longer the insignificant shuttle that I once was. Today, I shed my former self, the one who had reached the pinnacle of power. Today, I am reborn for the last time as Black Scythe, a rookie player, a novice that once again will be become the Grim Reaper!

This novel is also known as Master Fu's Mysterious Darling Wife

She is the The Young Miss of Military family Shen, her face is peerless, her temperament is cold, and she is her family’s treasure, but isn’t accepted as one’s child by her mother;

He is The Sole Heir to the top giant Fu Family, his power is unparalleled, indifferent high-born, the captain of the mysterious military force, and the youngest commander-in-chief.

Because of her grandmother’s wishes, she married him at lightning speed. She thought that it was a marriage that she needed, but she didn’t expect to be greeted with his extreme pampering.

- Description from Novelupdates