Whether doing business or investing, people must learn what "stop loss" means in their lifetime. No matter how painful it is, you must make a decisive move, otherwise you will regret it in the future. Zheng Wenlu of CICC, if she sold her house, even if she lost all her down payment, at least she would not have to take out a loan again. She learned an expensive lesson, and there are still infinite possibilities in the future. Zheng Wenlu and her husband's annual income dropped from 1.2 million to 800,000. After paying off the mortgage, the family still had 80,000 left, an average of 6,666 yuan per month. It can be said that this middle-class family has completely become a "house slave". It will be difficult to turn over before the mortgage is paid off in 2053, and it is almost impossible to provide a good education for their children. Even a decent life has become a luxury.