Traditional rural areas sell fish.

People who buy things never sell things. Generally, when they buy fish in the rural market, those merchants will help clean the fish and remove the internal organs from the scales, so they just need to take it home and wash it carefully before doing it. However, if you tell the merchant when you buy fish that you want to take the fish back and clean it yourself, the general merchant is unwilling, because at this time, the merchant also has some ideas in his heart, fearing that the customer will find out. In fact, these fish are underweight.

If you go to the rural market to buy fish and say that you want to take it home to clean it up, the general merchants will pretend not to hear it, and then start dissecting the fish soon, because the merchants are also playing routines at this time, but their routines have failed. Perhaps many laymen don't understand that if they want to take the fish home for slaughter, the boss won't sell it, because these businesses are short of weight and fear that their behavior will be exposed, so they don't want to sell it again.

Because businesses now use electronic scales to sell fish, although it looks very standard, it can actually be adjusted. When selling fish, the boss usually prepares two electronic scales, one next to himself and the other on the shore where the fish is slaughtered. The scale next to the boss must be standard, but what the audience sees is not necessarily standard. For example, the actual situation of this fish is a catty, but what you see must be superfluous, so the merchants rely on this figure to make more money.

In fact, when most people buy fish, merchants will also ask whether to help them carry it or take it home. If they say they want to take it home in advance, the scales given by the merchants are generally accurate, so the transaction will be smooth. However, if the fish you brought back has been weighed by the merchant, or the boss refuses to help, the boss will be somewhat reluctant. And at this time, the merchant will say that I will help, and then forcibly break the fish, which is quite fast. Because businesses are particularly afraid that their understaffed behavior will be exposed, which will affect their business, and they are also particularly afraid that relevant departments will investigate.