The setting steps are as follows:

1. Open WeChat, click the "I" icon in the lower right corner, enter the "Settings" page, then click "Account and Security", in "Account and Security" Find the "Healthcare" option on the "Security" page and enter this page.

2. On the "Medical Health" page, find the "ECG" option and click the "Settings" button.

3. In the "ECG" settings page, you can set your basic information, such as name, gender, age, etc.

4. Click the "Start Test" button, follow the prompts, and place your finger on the screen to perform the ECG test.

5. After the test is completed, you can view your own ECG data on the "ECG" page, and share or save it.