(Historical fiction, not cool, traditional martial arts, involving court battles)
"The Art of War" by Sun Tzu: "There are five kinds of time: there is the time of cause, there is the time of internalization, there is the time of reaction, there is the time of death, and there is the time of life. The five rooms all arise, and no one knows the way. This is called the divine discipline and the treasure of the king."
This article focuses on "spy war" and tells how Xue Wu, a young master from a wealthy family in Nanzhou, Dongyu Kingdom, entered the court, stirred up troubles, and how to "reverse the enemy" and "use the enemy."