@Yijing Zhang Oh, it’s okay. As you know, financial investing and real estate are the most common options. Plus, now that you can reach potential customers and clients all over the world, I think the best approach is to combine your personal interests or strengths with a niche business while using English. The more niche it is, the more likely you are to succeed. For example, I know a guy who runs a business repairing ukuleles. It started out as just a hobby, but now it’s his full-time business. He gets a lot of clients through the internet.