Pinduoduo keeps texting me. How to cancel it?

1. After opening Pinduoduo, go to the home page and click "Personal Center" in the lower right corner, as shown in the figure.

2. After entering the personal center, find "Settings" and click Enter, as shown in the figure.

3. After entering the basic function settings of Pinduoduo, find "Message Receiving Settings", as shown in the figure.

4. Then you can see that the system message of Pinduoduo is turned on by default. Just turn off the button behind the activity message, as shown in the figure.