When a user clicks on the "OnSale" node, it displays all of the services from different brands, categories, and groups.
当用户点击“OnSale”节点时，它通过不同商标、种类和团体来显示所有服务。
2
Think about an online mall, which can aggregate all of the "OnSale" items from different brands, so that consumers can get all of the sale items in one place.