Talking about the understanding of the philosophy of life that "failure is the mother of success" in combination with the reality of life.

How can you see a rainbow without experiencing wind and rain! No one says that it will always be smooth sailing, and people will always be frustrated. The important thing is to learn a lesson and start over. For example, if you want to learn to cook, you won't do it enthusiastically, but you will continue to buy, wash and cook enthusiastically. One day, you will find that your cooking has been recognized by everyone, and the result will be successful. This sentence actually tells us to correct or improve the method by accumulating experience after failure.