Why is it said that there is fundamentally no such thing as equivalent exchange in the world? If the exchange were completely equivalent, there would be no need for it to happen. I trade 100 yuan for your 100 yuan, and neither side gains anything. The reason exchange occurs is because both parties have different judgments of value. I am willing to trade something I consider less important to obtain something I consider more important; you feel the same. Money, time, knowledge, resources, emotions, relationships, and even reputation can all become bargaining chips in a transaction. And the value of these chips is not fixed; it constantly changes with age, environment, and circumstances. When both sides feel they have gained, the exchange happens; when both sides feel they have lost, the exchange stops. So often, our complaints are not about the world being unfair, but about our own chips not being enough. Instead of complaining, it’s better to increase your chips; instead of worrying about fairness, it’s better to improve your trading value.