I want to open a milk tea shop, and I want to know the specific process, such as health certificate, business license, trademark registration and store decoration.

You need to apply for a business license first, but now it seems to be free. You only need to provide identity authentication, and then you can apply for a health certificate. You don't need to register a trademark first. If you want to apply for a patent for your tea shop, you can apply for trademark registration. After handling all the documents, you can decorate the shop and start business.