He was once a taboo legend in the martial arts world, but now he is just an ordinary physical education teacher on the playground. **
Five years ago, Xing Kai, the youngest ace agent of the "Tianque" organization, was betrayed while performing a top-secret mission, and the entire action team was wiped out. Seriously injured, he took the "Tiangang War Qi" sealed in his body and became a physical education teacher at Tunghai University incognito.
**When the blood of the dead soldiers in the dark abyss dyed the playground red, the dormant beast finally woke up. **
An attack on the campus broke the peaceful life, and Xing Kai was forced to show his strength to protect the students. The moment the short blade was unsheathed, the power that had been dormant for many years in his body began to run rampant. The family imprint under his right shoulder blade burned like a soldering iron - this was a sign of the awakening of Xingtian's bloodline.
**The millennium secrets of the ancient martial arts family, the secret warfare in the modern city. **
As the investigation deepened, Xing Kai discovered that the mysterious deaths of warriors that occurred one after another in Donghai City were actually related to the "Return to the Ruins Plan" that led to the destruction of the team five years ago. The mysterious female warrior Su Li brings the shocking truth: he is actually a direct descendant of the martial arts supreme Xing Tian, and the Dark Abyss Organization is trying to use ancient forbidden techniques to open the "Gate to the Ruins".
**When technology and martial arts collide, who is the real game-breaker? **
Facing powerful enemies armed with genetically modified warriors and nano-weapons, Xing Kai must re-master the ancestral "Thirty-Six Tiangang Styles". From the university playground to the underground martial arts arena, from the secret realm of ancient martial arts to the military base, a war concerning the survival of modern martial arts has begun.
**"You think it's my power that's sealed?" Xing Kai crushed the last shackle, and golden war marks covered his body.
