Why are Indians used to hitting knives with fish when they kill fish?

Indians kill fish, why do they hit the knife with fish instead of cutting it? Our understanding of India is that it is very poor and backward, and the environment is very bad. The diet culture of ethnic minorities is really different from that of China, and the Indian diet is unacceptable to China people. We all know that the environmental pollution in India is very serious, but because it is close to the ocean, India is rich in marine fish.

Friends who like to eat fish go to the vegetable market to buy fish. If it is difficult to clean or they don't like to do it themselves, they can ask the boss to clean it up simply and take it home to wash it. If they go home to clean the fish themselves, they can use a kitchen knife. But in India, Indians don't kill fish with knives, but let the fish hit the knife. Why?

We usually buy fish in the vegetable market, and the maximum amount will not exceed 10 kg, because we often eat small rivers and marine fish, but for Indians, it is normal to catch 50 kg or 60 kg in the sea. Therefore, if you chop fish with a knife, your hands are very tired, but if you pick up the fish and hit it with a knife, it will be much easier.

Moreover, when Indians sell fish, they don't sell them as a whole, and they won't clean them for you. They cut them into pieces and sell them by weight, so that it is convenient for them to cut such a big fish into pieces, regardless of whether it is clean or not. The method of killing fish by hitting a knife with fish has existed in India for thousands of years, so it is still reasonable.