Ask yourself, what is your first reaction when you see such a small card? Not a trash can? This marketing model is useful for fast food and catering, but it is also useful for some service industries, such as maintenance, but useless for others to promote products. This flow conversion is out of proportion. Even if you distribute cards to every household in the city, how many of them come to you to lose weight because of your little card? This thankless marketing model ended early. It is suggested that the landlord learn more about how to promote products and how to do useful high-proportion promotion marketing for products, instead of issuing small cards like this.