After time travel, the protagonist discovers that the "martial arts principles" of this high-level martial arts world are actually the basic physical/mathematical formulas of his own world. He uses "scientific thinking" to deconstruct martial arts and reduce dimensionality to attack.
While others practiced martial arts, he built an "industry", using modern business thinking to sell "tailor-made martial arts packages" and "martial arts injury insurance", and eventually became the "master of the martial arts trust" that controls the lifeline of the world economy.
The core of the story explores "power and responsibility" - the world is not a playground. Every time you travel is an intervention and disturbance in the ecology of another world. The protagonist needs to make a choice between becoming stronger and protecting.
