Taobao knows how to join other people's groups.

Taobao Zhihu group number to join others group method is as follows:

To join other people's Taobao group chat, you first need to enter the name of the group you want to join in the search box at the top of Taobao homepage, and then click the search button. In the search results page, you can find the group type to join through the filtering options, select the appropriate group type and click Enter. In the group page, browse the page content, find the group number and write down the group number. You can copy the group number for later use. Next, open Taobao APP and click the message icon in the upper right corner to enter the message page. In the message page, click the+button in the upper right corner and select the option to join the group chat. In the pop-up dialog box, paste or manually enter the previously recorded group number, and then click OK. The system will automatically send an application for joining the group, and wait for the group owner or administrator to successfully join the group.