To enter the Doudian selection e-commerce compass and the selected alliance, you can follow the steps below: Log in to the Doudian backend: Use your Douyin account to log in to the Douyin open platform official website, and then enter the Doudian backend. Enter the e-commerce compass: On the homepage of the Doudian backend, find and click the "e-commerce compass" option to enter the e-commerce compass page. Here, you can see the store's data overview, traffic analysis, product analysis and other information to help you better understand the store's operation. Enter the selected alliance: Also on the homepage of the Doudian backend, find and click the "selected alliance" option to enter the selected alliance page. Here, you can learn about the introduction and advantages of the selected alliance. If you meet the conditions and are interested in joining the selected alliance, you can click the "apply to join" button, fill in the relevant information according to the system prompts and submit the application. It should be noted that entering the Doudian selection e-commerce compass and the selected alliance requires certain permissions and conditions. For details, please refer to the relevant documents and instructions of the Douyin open platform. At the same time, in order to make better use of these tools, it is recommended that merchants regularly learn and understand the operating rules and strategies of the Douyin platform to improve the operation effect of the store.