I read an article in a computer magazine several years ago. It says that if you search with the two characters of "dog shit" on Baidu, you will often see an advertisement like this on its search page: "Find dog shit on Alibaba"...
So long has passed, I searched for the two words "dog shit" on Baidu again and it was still the same as before. Not only do I feel sad for Baidu, because no matter what you search, at the upper right corner of the Baidu page, there will be "visit universal URL **, surprising discovery **, on Hc360.com, find ** on Alibaba"...