I'm from Heilongjiang, and I've opened dumplings in my hometown. I don't know much about the Shenzhen market. Let me introduce my experience to you.

First, there are many kinds of jiaozi traps. I suggest you put a small amount of sparerib king (a seasoning) in jiaozi traps, which is also a secret.

Second, you should choose special gluten flour, not necessarily the best jiaozi flour, which is costly and ineffective. This will make jiaozi not easy to be boiled and mixed together.

Third, maybe southerners don't like garlic because of bad breath, so I suggest you use garlic oil or garlic powder (the cost is very low), so that the garlic taste in your mouth will be much less after eating, or you can give some gifts such as tea or chewing gum directly, which will not be very expensive, and will also make customers feel that you are thoughtful for him. Paying more attention to these small details will make customers feel kind.