To enable local sales on Douyin, you can follow the steps below:

1. Complete personal information: Make sure your Douyin account has been authenticated with real name, and your personal information is complete and compliant.

2. Bind your mobile phone number: Bind your Douyin account with your mobile phone number to receive relevant notifications and verification information.

3. Enable the store function: Go to your Douyin personal homepage, click the "..." button in the upper right corner, select "Creator Service Center", find and click "Open a store". Follow the prompts to complete the store opening process, including selecting the store type (such as: personal store, corporate store, etc.), submitting relevant qualification materials (such as: ID card, business license, etc.), setting store information, etc.

4. Add products: In the store management backend, click "Product Management", select "Add Products", and fill in product information according to the prompts, such as: product name, price, inventory, description, etc. At the same time, upload product pictures and videos. Ensure that the product information is true and accurate and complies with the regulations of the Douyin platform.

5. Enable same-city delivery: On the product management page, find the product for which you want to enable same-city delivery, click "Edit", and check the "Same-city delivery" option. Set the delivery range, freight and other related information.

6. Publish same-city sales videos: Publish product-related videos on the Douyin platform, and pay attention to the platform content specifications. Add product links or store links in the video description to facilitate users to click and buy.

7. Promote stores: Use other Douyin functions, such as live broadcasting and short video promotion, to increase store exposure and attract more users to pay attention and purchase.

Please note that the activation of the same-city sales function requires compliance with the relevant regulations of the Douyin platform to ensure that the product quality, price and service meet the requirements. At the same time, we must provide good after-sales service, promptly resolve problems encountered by users, and improve user satisfaction.