Fang Han, the grandson of the King of Shen Needle, has the body of nine Yin and no veins. He entered the world to search for the lower part of the "Huangpu Needle Sutra" for autonomy, but by accident, he became a security guard at the Medical University. The security guard knows martial arts, and the hooligans can't handle it. The security guard knows medical skills, and the beauty can't walk. A turbulent love, a bloodbath, a story of promoting Chinese medicine starts from this security guard...