Well, let me tell you something. If it is formal, you must first apply for a food hygiene license, and then apply for an industrial and commercial business license after obtaining the food hygiene license. You can choose 1 next. Go to the tax bureau to apply for a tax registration certificate (usually at the local tax bureau), and then the relevant personnel will set the tax for you. Usually, once the tax is set, you need to pay it once a month. 2. You don't need to apply for a tax registration certificate to start business directly (of course, it is troublesome to ask when you will be paid by the tax bureau in this case)