Find ways to attract investment through marketing.

You can ask the seniors about this. In addition, you should learn to analyze the main audience of your customers. Look at the distribution, characteristics and preferences of these people, and then make corresponding countermeasures and adjustments.

As for joining the group, if you want to join that group, just put on your makeup and you can go in. For example, the investment group, you can pretend to be an investor, say what I lost in stocks or futures, ask for advice, find a teacher and so on. It is still valid.