There are other ways, but it depends on whether the futures company you go to supports you to develop customers in other ways, or they already have many ways, whether you can choose for yourself and so on. So, you should go to a company first ... or ask if there are other ways when you go to the interview, because telemarketing is a more efficient way now, so you will see that many companies are using this way. Some companies also use the Internet, but there must be certain preconditions, such as whether you have the methods and ability to develop on the Internet. This is a personal ability, such as writing a good blog ... or setting up a point on the roadside (where there are many people in shopping malls and supermarkets). Others take advantage of previous relationships or parents' relationships. It's up to you.