Don't spend too much money to do free futures knowledge training for customers, and do a better image promotion. And send a bunch of sellers one-on-one counseling and promotion. Plus the messy free lectures. Existing users can also continue to build a good image of deepening the company in their hearts. The best advertisement is satisfied customers. In short, everything is customer-centric. When customers are satisfied, they will promote it instead of you. Besides, do you have a lot of money for advertising?