1, which means that if you meet a strong opponent, you will become stronger than before. When you meet a weak opponent, you will become weaker than before. When you meet a strong opponent, your competitiveness will be aroused and your fighting spirit will be higher. Even if you still can't beat your opponent, you are much better than yourself.
2. "When you are weak, you will be weak" also has a more positive understanding, which means "When you meet a weak opponent, you will feel pity, so your strength will be weaker than before" or "When you meet a weak opponent, you know that the other side is weaker than yourself, so you should save your strength and not spend too much on the other side".