Strongest Nova: Path of Vengeance - Chapter 19: Strength Enhancement

The ill-fated high school student Liu Yuan obtained the inheritance of the top civilization in the universe and changed his own destiny. He also used many powerful technologies in the inheritance to lead the Chinese nation to rise in the universe.

- Description from novelbuddy

As part of the imperial family, every move by Chu Yuan in this game of chess is made with apprehension, fearing that with a moment of inattentiveness, the whole match will be lost in a single move. Ascending to the throne at eighteen, not half a year passes before civil strife erupts in Yun Nan. Though the thoughts of the old guard at the imperial court are not exactly identical, they are all waiting to see how the new emperor will put an end to this. Unexpectedly, before this side could make a move, a few thousand miles away, the King of Xi Nan, Duan Bai Yue, had already personally commanded troops to attack in all directions; not half a year had passed when peace was restored. Sparse moonlight shines into the palace; Chu Yuan stamped the wax seal himself, and had a secret letter sent urgently to Yun Nan 800 miles away — this time, what must we(1) give in exchange? Brush marks passed through the back of the paper; it almost can be seen, when writing this line, how angry the young emperor was. Duan Bai Yue spread out a piece of paper unhurriedly, replying with only one word. You.

Crossing over to an independent urban world where martial arts and immortal law coexisted, the only thing Lin Shen could rely on was his clone’s golden finger.

“Clone cultivation, the host becomes stronger.”

“Clone [Pure Flame Body]: Flame attribute techniques cultivation speed +300%, Blazing Flame Palm, Melting Hand, Pure Flame Sword Skill… Any flame attribute techniques at your service. You can become a master in a day!”

“Clone [Natural Daoist Body]: cultivation speed +500%. All martial arts techniques can be understood at first glance, and will be integrated, crushing all geniuses!”

“Clone [Non-self Sword God]: Sword art technique power +200%, sword art technique cultivation speed +200%. No matter how strong you are, I will cut you down with one strike!”

…

“You never know how many clones are trying to cultivate behind the person you are talking to in front of you!”

“What does it have to do with me if my clone did it?”

“Don’t try to outnumber me cuz you can’t!”

I lived for you in the last lifetime, everything I did was for you, yet you wanted me to die; so, this time, life is mine to live! This world lied to me, betrayed me, and humiliated me, and I am back to change everything!

- Description from Novelupdates