The so-called larded school refers to three realms: thick-skinned, black-hearted, and thick-skinned. First, it is as thick as a city wall and as black as coal. Second, thick and hard, black and bright; Third, thick and invisible, black and colorless. Li Zongwu only saw the second realm, and the third realm cannot be explained by ordinary good and evil, so he avoided talking about it.

The reason why larded school can stand in the world and last forever lies in the word "larded school". Ordinary people often only care about immediate interests. If we use the first method of "as thick as a city wall and as black as coal", we can get immediate results, but not in the long run. People who are a little smarter than the average person want long-term interests and don't care about the present, so the ultimate goal can be achieved by long-term use of the method of "favoring one over the other, being black and clear". If an enterprise survives without honesty, it will benefit in the short term, but not for a long time. It can get enough food and clothing at most. Those who insist on honesty sometimes prefer to lose money and build a brand to pursue long-term interests. Timid and thin-skinned exercise: 1 associate with people, talk to people you don't know, greet people 10 actively every day, and have in-depth talks with strangers 1; Ask more questions, don't be ashamed to ask questions, try to borrow something from others (unfamiliar) every day, ask a question, and be sure to lend it to you to get an answer. 3 penniless, go to a strange environment to survive. If you want to learn, you must have perseverance, or you can't think about it.