You can apply for a job in a bank, become a bank credit card salesman, and promote credit cards. The bank will specially equip the salesman with a tablet computer; If you don't want to apply, you just want to promote. Now many platforms have promotion links. You can generate your own promotion links and then promote them. After you successfully apply for a card, you will get a commission, usually around 100, but this is necessary, that is, you must apply for a bank credit card for the first time.