[Transmigration + System + absurd comedy + bickering couple]
Overworked office drone Lin Yi dies suddenly and transmigrates to the Zhenguan era, where he starts out with nothing and nearly starves to death!
He activates the Lie-Flat System. Instead of studying hard for the imperial exams, he earns rewards by pulling all sorts of stunts and making people laugh, then trades them for delicious food and farming tool blueprints.
He runs into Princess Changle, who's slipped out of the palace in disguise. The two trade barbs and get into one hilarious situation after another, taking on smug scholars and powerful clans as they make a name for themselves in Chang'an.
He only wants to lie flat and live a quiet life, but Emperor Taizong forces him into marriage with an imperial decree!
He wants to slack off and lie flat, but now he's being forced to become a royal son-in-law. A side-splitting escape-from-the-wedding caper is about to begin. Come watch this laid-back son-in-law turn the Tang Dynasty upside down!