What do you mean, go upstairs and take the ladder? The origin of idioms and the explanation of detailed words

The phonetic notation ㄕㄤˋㄨㄔㄡㄊㄧ Chinese pinyin sh dang w sh ch ū u t and c ü c ü c ü c ü c ü c ü c ü The original text is: "Fake it, if you don't persuade it, you will die." In case of poisoning, it is not appropriate. Deliberately display profitable points, lure the enemy into a desperate situation, cut off their reinforcements or soldiers, and make them all fall into besieged death. Suffering from extinction, it is because of greed. ) The definition of instigation is to seduce with interests. If the door of convenience is not opened because of the temptation of interests, the enemy will still hesitate. Therefore, when using the "going up the stairs" plan, you must first set up a ladder or indicate that it is convenient to go to the house. Climbing up the ladder, and then removing it, is very tempting, making it no way back and having to give in. When Zhuge Liang and Liu Qi climbed the stairs together, Liu Qi secretly asked someone to pull the ladder away, so that Zhuge Liang couldn't get up to the sky and down to the ground, so he had to point out to Liu Qi that "Shen is alive and dead inside, and Zhong Er is safe outside". Liu Qi suddenly realized that he asked his father Liu Biao to send him to Jiangxia to avoid his stepmother and save his life. Something like that goes upstairs to the stairs.