Counterattack at Jinling 1937

Yang Chengyu, a modern extreme sports enthusiast and retired soldier, traveled through time due to an accident during an ancient building inspection (touching a mysterious bronze fragment under the Ming City Wall of Nanjing) and awakened a "superhuman physique" - strength exceeding human limits (punch power up to 1.5 Tons), speed comparable to a cheetah (100 meters in 3 seconds), strong self-healing ability (non-fatal injuries healed in 24 hours), and possessing photographic memory and basic fighting and first aid skills.