How did the trick come from and why did it become synonymous with strategy?

When we watch TV series, we must be familiar with a prop, that is, the "kit". Speaking of this, many people can't help but think of the word "sleeve". It seems that as long as the sleeves appear, there will be extraordinary strategies and ideas to help the protagonist. So, why does this word appear? What is the origin of this word and why can a move be used to refer to a coup?

If you don't know the origin of this word, you can guess first. First of all, tips often appear in film and television dramas or novels. There don't seem to be many scenes in the official history. You can make a bold guess first. The word may come from a classical novel. As for which one, it seems difficult to guess, but it can also be considered that since intrigue is needed, which one of the classical novels will involve this?

This word comes from a novel we are very familiar with, but not necessarily read, Romance of the Three Kingdoms. Fiction and intrigue can be done, but authenticity is not so strict.

There is such a plot in the Romance of the Three Kingdoms that Liu Bei's wife, Mrs. Gan, died. This incident made Zhou Yu of Soochow know who Zhou Yu was. Even in the novel, he is a resourceful and powerful figure, and he immediately wants to use it as an article. Jingzhou, located at the junction of the three spheres of influence, has always been a battleground for military strategists, but this time in the hands of Liu Bei, Zhou Yu wanted to take Jingzhou by this matter.

Zhou Yu wrote a book and gave it to Lu Su and Sun Quan, asking him to marry his sister and adopt Liu Bei. What is an adopted wife? That is to let Liu Bei live in Soochow. Zhuge Liang knew why the Soochow envoy arrived, although he didn't see Liu Bei explain his purpose. He told Liu Bei early and promised to come down. Liu Bei did, and Zhuge Liang made him three tricks, put them in three kits, and did them in the above order.

Liu Bei did it one by one, and ordered people to buy wedding equipment to let Wu Dong know about it. He saw Joe again and told him the news of his marriage. Joe went to see her again. She was Sun Jian's second wife, but Sun Quan regarded her as his mother. Wu Guotai loves his daughter very much. Hearing that Sun Quan had married Liu Bei without telling himself, he got angry at that time and asked Sun Quan to question him. Then, he said that Cao Cao was going to fight Jingzhou, which was of course a lie, but if he didn't say so, Liu Bei might not be able to go back. Finally, let Mrs. Sun settle the pursuer and return to the base smoothly.

What it means to lose a wife and a soldier also comes from this story.