Put up some leaflets first, and those who are interested will call you. Few people know this beatbox. There will be 10 people at first. Then improve the beatbox ability of your small group and often invite everyone out to practice. When we get to the place where we often hold activities at school, we can show it with portable speakers to improve our popularity, and then many people who like hiphop will pay attention to your community. Mainly because I am strong enough.