Itai no wa Iya nanode Bōgyo-Ryoku ni Kyokufuri Shitai to Omoimasu - Chapter 341

Bai Aoxue, the best mercenary in the 21st century, is accidentally sent back to the Chengxi Dynasty in Great Continent due to an explosion in her mission, and trapped in the first daughter of Prime Minister. After her rebirth, she is set up by her father to marry the 5th prince Jun Yeyan who wears a mask all day long.
In the face of bloodthirsty enemies, discord between brothers, collusion among courtiers and invasion of enemy state, can Bai and Jun resolve the crises? What will happen to their political marriage? How will the fierce battle for the throne end?
With many twists and turns, the book brings you to experience palace revolution, love and hatred thousands of years ago.

- Description from Novelupdates

As soon as he opened his eyes, Li Ming was plunged into these tumultuous interstellar spaces, where countless civilizations held their shotguns at the ready, eyeing everything in the universe with covetous intent. For him, the most crucial issue at hand was solving the problem of food and warmth.Fortunately, he could control special items and gain special ability bonuses—【Thunderclap Armored Exoskeleton—Grade D】【Control Effect: Power Amplification—100%】【Control Ability—Armored Four Arms: Develops four mechanical arms to aid in combat, and amplifies control by 50% with Thunder Element.】He could even evolve it—【Electromagnetic Power Engine】→【Cold Nuclear Reactor】→…【Stellar Furnace】………An evolutionary path with no boundaries in sight, a supreme arsenal spread across the galaxies, and a grand expedition fleet casting endless blood and fire.When Li Ming unfolded the prism wings that covered planets and fired the super-range photon lasers, and the Stellar Furnace in his chest blossomed with a brilliance far surpassing the sun’s, supported by computational power from the Quantum Photon Calculator...In the universe, countless life forms exclaimed, “Flesh is weak; ascend through machinery!”Li Ming helplessly said, “but this really isn't mechanical ascension...”

After five years, Ning Xi has returned and is out to take revenge on the sister who turned her parents against her and the childhood sweetheart who betrayed her for her sister. She aims to fulfill her childhood dream and become a famous actress. However, her sister is still out to get her, and she has to avoid all her underhanded schemes.

A black pearl brought Jiang Feng from a doomsday stage where top masters with one emperor, two emperors, three emperors, four deities, and seven peerless cities show off their glory to parallel time and space, and this time and space-the end of the world has not yet opened! !! Under the sky, the youth look up, if I have strength, can I get through … these two time and space! !!

- Description from 69shu