Invincible Carefree Marquis

Modern soul transmigrates into wealthy heir Li Ning of the Great Zhou Dynasty, who goes to jail for beating an official's son. When envoys from the Han Kingdom provoke him, Li Ning accepts the challenge and crushes his opponents with poetry, zither skills, and clever use of levers, achieving legendary status in one battle. He then discovers he has been poisoned, uncovering a conspiracy involving Crown Prince Qin Gong, Prime Minister Bai, and the current emperor. Teaming up with the top swordsman Liu Guochan, he digs for the truth, punishes the corrupt, exposes the emperor's plot to kill the seven Li family sons, leads 300,000 troops to force the palace and quell chaos, eliminates all villains, and finally ascends the throne to become emperor.