Does anyone know how fairness was embodied in the old society? How to achieve equivalent exchange without money to buy things?
Gold and silver are natural currencies. When there is no so-called currency, gold and silver are generally used for trading directly. In the extremely poor areas of old China, sometimes grain and cloth can be bartered and become universal equivalents, which is generally accepted by people. For a period of time after the founding of New China, it was popular to exchange eggs for salt in rural areas. Generally speaking, what is acceptable to everyone is basically fair.