If you don't understand my tweet, there is a possibility of the following➤ 1. You don't read my tweets continuously, so you don't know my investment system and language style; 2. You read continuously, but you don't think and can't remember; 3. If you continue to read, think and remember, but still can't understand, it can only mean that your understanding is too poor, and I personally think the third point does not exist. Fourth, if you don't understand, you can ask, don't be a bar, I don't rely on traffic to eat.