Warring States Martial Champion: Starting as a Hostage to Develop the World's Martial Arts

"Cough, cough..." Yan Wujiu wipes the scarlet blood from his lips and looks at the enemy nation's swaggering Sword Saint. A sickly yet breathtaking smile blooms across his pale face. After transmigrating into the body of an enemy nation's hostage with little time left to live, everyone in the world thinks he's fragile enough to be knocked over by a breeze. Even the maid who brings his tea dares to skimp on his medicine. But they don't know that Yan Wujiu's eyes can see the [flaws] in every martial art in the world.

"Hey, your swordsmanship has fatal weak points here, here, and here..."

Tilting his head, he speaks in the gentlest voice while saying the cruelest things.

[Ding! Observed the True Martial Sword Formula. Analyzed 36 flaws and deduced a perfect-grade divine art!]

The incomplete arts others spend ten years painstakingly mastering, he can deduce to perfection with a single glance. The protective force others take pride in, he can shatter with a light poke using the weakest internal energy, sending them into a Qi deviation on the spot. And so, the entire tone of this world goes completely off the rails.