Obviously, it is best to have a shopping app, which can be downloaded by the following steps:

1. Open your mobile app store, such as Apple App Store or Android App Store (such as Huawei App Store and Xiaomi App Store).

2. Enter "Mingming Optimization" in the search box.

3. Find and click the "Mingming Optimization" application in the search results.

4. Click the "Download" button and wait for the application to download.

5. After the download is completed, click the "Open" button to start using Mingming Preferred app.

Please note that the specific download steps may vary depending on the phone model and operating system version. If you encounter problems, you can also check the description of the preferred developer and user comments in the app store, or look for relevant download links in official website.