I know a good auxiliary tool. I don't know how you want to manage WeChat friends in batches. Because I am in business, there are many friends on WeChat, thousands of people and dozens of tags to sort out. Later, there was a "Reed zs" tool that felt ok. It can synchronize WeChat contacts to the computer desktop, and then modify comments and tags in batches. Tags can be deleted, merged, added and cloned, which is quite useful.