Which is better, brother or nephew, to get married and press the car?

Generally speaking, they are boys younger than themselves, or boys and girls. According to different regions, the general customs are different. If you want to pay serious attention to customs, you'd better do so. If you don't care, it doesn't matter. Depends on your mood. Usually the bride's unmarried brother. Here, the woman gives the car to the man, and then the man gives the car money. This money is usually agreed in advance. In fact, you don't have to care about those details, just the overall situation.