Pinduoduo's mobile phone verification code was sent by that number.

Of course, SMS is sent to the mobile phone number where you log in, and all software verification messages are sent to the mobile phone number you use when logging in this software. Because only when you give the software a phone number will the software know which phone number to send the verification code to, and Pinduoduo is no exception. Although there are pop-ups and many activities in Pinduoduo, this is not the reason why Pinduoduo is an exception, so Pinduoduo's text messages are sent to the mobile phone number used when logging in.