Generally speaking, there is no problem in busy places, such as subway entrances in Shanghai and Beijing, and street stalls in shopping malls, although it is a bit exaggerated to apply for a card in this way. But this is a last resort method that salesmen have to do for performance. There are two assessment mechanisms for bank salesmen, one is based on quantity, and the other is based on the profits brought to the bank. Like on the street, this is usually done to achieve certain quantitative indicators, as long as the customer does not need to open a card to apply for a card.
The main disadvantage of this card application method is that some of your communication information will be leaked too much. Irregular card application agencies may lose this information, which may cause you to be harassed. But regarding the security of the card, as long as you don’t throw the card away immediately after opening the card, there will generally not be a big problem. Please feel free to use it, but you don’t need to apply for three!