Era background: In the last years of the Dayong Dynasty, the imperial power fell aside and the eunuchs took over the power. The world is secretly controlled by the "Tianji Pavilion", and the martial arts leader is just a puppet in the pavilion.
* Core conflict: A broken knife named "Song of Sin" is said to contain the secrets of the treasure of the previous dynasty and the peerless martial arts "Wuxian Tiangong". The three forces of the imperial court, good and evil in the world, and the hidden sect compete for it.
* Martial arts system: transition from low martial arts to high martial arts. The early stage focuses on the dismantling of moves and internal energy, while the later stage involves the resonance of spiritual artistic conception and the energy of heaven and earth.
*Character profile:
* Male protagonist: Shen Changfeng. On the surface, he is the poor accountant of Zuixian Tower, but in fact, he is the only survivor of "Tingyu Tower" that was wiped out ten years ago. He has a tolerant personality, a cold sense of humor, and is good at using an iron ruler without an edge.
* Heroine: Su Hongyi. A holy girl from the Demon Sect, who behaves perversely, both righteously and evilly, sets out to the Central Plains in order to solve the mystery of her life experience.
