I, the Strongest Live-In Son-in-Law

Qin Luo transmigrates to another world and becomes a pretty-boy live-in son-in-law in a marquis's household! Impress the world with his talent? That's impossible... The only way to keep living off his wife is to draw erotic paintings. Marquis: "Qin Luo, isn't the sun nice and warm? Have you finished those erotic paintings?" Qin Luo: "..." The Guardian General: "Qin Luo, I command a million troops. Dare to fight me?" Qin Luo: "Heh. My wife is worth a million troops. What can you do about that?" The top scholar of the imperial examination: "Qin Luo, I'm brilliant and widely learned. What about you?" Qin Luo: "My wife knows all there is to know, from astronomy to geography, and excels at music, chess, calligraphy, and painting. She can help a wise ruler govern with her intellect, or ride into battle and conquer the world with her strength." A foreign ruler: "Qin Luo, you're a despicable, shameless pretty-boy who lives off his wife." Qin Luo: "Shh... My wife has a bad temper. If she hears you, I'm afraid she'll raze three of your cities."