evaluation becomes the basic material for learning. After you experience failure because with a high evaluation you can automatically get more stable and even more profits in the future because that way you can get successful profits, you can get newer results, we go to the previous one, therefore in When you analyze, when you fail, you should carry out a thorough evaluation, no matter whether the error is small or large, you still have to carry out the evaluation. So that later, when you find the slightest error, you can immediately be active and immediately reactive to carry out an evaluation.