Who said that only time-travelers can use the knowledge of mathematics, physics and chemistry in ancient times? The six-door female catcher Li Qingyan, who is highly skilled in martial arts, intelligent and astute, can rely on rigorous and meticulous logic, calm and clear thinking, uncover secrets layer by layer, peel off cocoons, and solve many conspiracies through the most common physical and chemical phenomena in life (no doubt, this is an ancient story!). Until one day, she was seriously injured and almost died in the snowfield. She met Lin Zhiwu, the Marquis of Zhenwu who was willing to use half of his kung fu to save her life.
"Why did you come?!"
"I came here to clear your name."
Purpose: Law, justice is as great as heaven
