Jaku-chara Tomozaki-kun - Volume 1 Chapter 4 part4

She is the slow-witted idiot of the Prime Minister’s Residence. Everyone bullies her. He is the most respected and unfeeling Prince, with frightening ability and absolute envy! Together, they are conferred an imperial edict of marriage.

She acts stupid and tries to decline in every way possible while he despotically escorts her into the wedding…… everyone ridicules the match, but no one knows that the “idiot” has transformed from a loser into a talent.

After the marriage, when they encounter the Empress Dowager examining the room, they act in concert with each other and pretend to be two mandarin ducks deeply in love. Afterwards, she laughs, “The performance has ended. Your highness, please return.”

He laughs softly, “Since you’ve got onto this Prince’s bed, don’t even think of getting off.”

- Description from Novelupdates

This web novel’s a hidden masterpiece. Give it a few chapters......Li Xun was meant to live a quiet, privileged life as the heir of Prince Fu in the mortal realm. But that future shattered the day he was kidnapped and forced into one of the most powerful righteous sects. There, he was coerced into stealing one of their secret techniques.In a world of ruthless schemers and intricate plots, where every step hides a plot and traps are laid one after another, only those who plan flawlessly can survive to the end.What began as a desperate struggle to stay alive would transform Li Xun from a helpless pawn into the most terrifying cultivator the world had ever known.......

By the coast, a hundred-meter Star Gate shimmered with flowing light.Beyond the Star Gate, an army forged of steel stretched as far as the eye could see.Above the Sky Dome, squadrons of fighter jets streaked across, weaving an iron curtain.In the distant ocean, scores of aircraft carriers, destroyers, and frigates dotted the seascape, ready for action.All cannons were aimed at the figure who emerged from the Star Gate.“In the name of the Federation Command Center, I order you to stand down, or what awaits you is total war,” said the voice.“War?”Gu Jinlai took a step forward, and his form swelled against the wind, in an instant growing from less than two meters tall to a colossal Chaos Demon God thousands of kilometers high, emitting the brilliance of a white dwarf star from his being, his own gravity causing thunder and lightning, as well as tsunamis and tides within a thousand-mile radius.He looked down...At the war weapons that seemed like toys.He reached out, and a hydrogen bomb fell into his hand.Within him, the electron-degenerate star core released Helium, Helium elements expanded, and the terrifying high temperature instantly caused Deuterium and Tritium, Hydrogen's isotopes, to fuse, the energy bursting forth, forming a blazing white brilliance on the ocean's surface that was like igniting a sun.Before this sun's energy could be released, he clapped his hands together, and the dazzling white, mixed with heat in the billions of degrees, was compressed and sealed within his palms, not a fragment escaping.“I think, you should choose peace.” he suggested.

Chen Sha came to a world of immortal martial arts and was ordered to take charge of the world’s first sect.

Before his death, the previous chief told him:

“If you don’t become the best in the world for one day, you are not allowed to go down the mountain for one day.”

So he closed himself in painstakingly, crossed the heaven gate in his body, and faced off against the ancient and modern powerhouses…

…

Many years later, Chen Sha recalled the day he went down the mountain,

From the moment he descended the mountain, he was number one in the world.

In the next ten epochs, any gods and demons have returned, immortals and Buddhas have lived in the world, ancient powers and ancient gods have appeared one after another.

No matter how the times change, he has always been No. 1 in the world and has never changed.

- Description from novelbuddy