In the Second Generation of the Trench, He Changed To the Ruanfan Script - Chapter 29:

Power comes with a cost... and it was something she was willing to trade her soul for.A few nights before her wedding, Lauren sought a way to break her fourth engagement. Known for her bad reputation as the rebel princess, she was the only lady who had the guts to step foot on the Everston mansion, the house of a notorious warlord, in the middle of the night.She offered him a wicked alliance that the entire kingdom did not see coming: a marriage.A vixen pretending to be a damsel in distress and a man whose crimson eyes screaming for bloodshed. Could something blossom in this treacherous dance of lies and deception?--“Are you upset?”She eyed him sharply. “Should I be honored that I got tricked by you, milord?”He drank the remaining wine in his glass with one gulp and put it on the wooden table.He stepped in front of her. His hand was on the rail on her side while his other hand grabbed her glass and finished her wine before putting it down.The way his Adam's apple moved with his every violent gulp made her feel a tickling heat around her nape.When he brought his attention back to her, he licked his lips to wipe off the trace of wine.“How shall I make it up to you then?” he asked with his deep voice, like a seductive devil asking his victim how she would like to be killed. Dangerous yet… enthralling.

Doomsday comes, and human beings enter the heavenly world.
Ten years later, Yang Chen, who was betrayed tragically, returned strongly with the Tianyu bug. In this life, he vowed to make the betrayal pay the price. He has a powerful bug bonus, just like an open hang. Frightened to hear…

- Description from novelbuddy

Hao Ren, an ordinary university student, saved a little girl who fell from the sky. By accident, he swallowed a “candy” that fell off of that girl’s body and somehow became the Dragon King’s son-in-law……

The notorious imperial court lackey and the meritorious military general were well-known for their mutual dislike, a pair of arch-enemies set in stone. Who could have foreseen the unexpected change in the winds of heaven: the general injured on the battlefield, both legs disabled, and even forced by the emperor to marry his nemesis.  

With one marriage edict, two people with mutual hostility are forced to marry and live under the same roof. Yet after these long days together, they come to the realization that this fellow is not truly devoid of any saving grace/unattainable and high out of reach.

- Description from Novelupdates