For how to modify the title of an already listed product, I recommend that you follow the steps below:

1. Log in to your TEMU account and enter the product management interface. Usually, you can find the relevant link in options such as "My Shop" or "Product Management".

2. Find the product whose title needs to be modified and click to enter the details page of the product.

3. On the details page, you should be able to find the title field of the product. Usually, the title will be at the top of the product information or in a very prominent position.

4. Click the Edit button or the Modify button next to the Title field to enter the edit mode.

5. Modify the title of the product to the new name you want. Make sure the new name accurately describes the characteristics and features of the product.

6. Save the changes. Usually, you can click the Save button or similar options to save the new title.

Please note that different e-commerce platforms and systems may have different interfaces and operation steps, so the specific steps may vary. If you are still unsure how to modify the product title on TEMU, we recommend that you consult TEMU's help documentation or contact their customer support team for more accurate and specific guidance.