As for the conditions, the first is eyesight, the second is financial resources, and the third is manpower.
Eyesight means that your friend must have a good level of antique appraisal, otherwise it will be more difficult to do antique business (except selling fakes, of course)
Financial resources mean that your friends should have a certain amount of money, such as the cost of opening a store in the past and the funds used for circulation in the future.
Manpower means that your friends have good interpersonal relationships, it is convenient to find good buyers and sellers, and start a business like a duck to water.