Tags that have been posted in the circle of friends cannot be deleted unless you delete the whole story, or you can choose to modify the visible range.

1. Open WeChat my page and click on the circle of friends, as shown in the figure below:

2. Select the label that needs to be modified, as shown below:

3. Click on the details below, as shown:

4. We can see that under the talk, we set a label, as shown in the figure:

5. Click on the three points in the upper right corner, and then select Modify Visible Range, as shown:

6. Modify the original visible part to public, and click Modify, as shown in the figure:

7. Here we can see that the label just set has been cancelled, as shown in the figure: