I Was Captured and Became an Undercover Agent.

Parallel troubled times, four kingdoms are at war. Jiang Yueming started as a prisoner on death row and relied on modern fighting skills to survive in bloody gladiatorial battles. He dealt with the admiration of Cao Xiu, the general of Wei, and the control of Wu's spies, while at the same time supporting a dilapidated family. In this era where heroes and idiots share the same destiny, he can only use his fists, feet and wisdom to earn a place for himself and his family in troubled times.