The so-called common area ratio is the ratio of the common **** area to the total floor area. For residential properties, the smaller the ratio is, the larger the floor area is, and vice versa. But stores are different. In our country, the state regulations of stores in shopping malls not more than 60% of the common area, so stores in shopping malls in the common area of about 50% are considered reasonable. Fair or not, not only related to the investor's investment costs, but also directly related to the carrying capacity of the mall on the flow of people, directly affecting the return on investment.