According to general SEO rules, the weight of a sub-store and a main store are not necessarily exactly the same. The weight of a sub-store will be affected by the main store, but it also has some independent weights of its own. A sub-store can enhance its weight through its own content, links, tags, domain names, etc. At the same time, if the sub-store has a more prominent position in the main store, its weight will be higher. In short, the weight relationship between a sub-store and a main store is affected by many factors, and specific analysis of the specific situation is required.