Original articles are easy to find. Most of the answers downstairs are out of date. There are several ways to find original articles.
1. cicada website. I have been looking for cicada's articles on the internet before, and the webmaster himself is very happy that his articles have been reprinted. I haven't investigated any copyright issues anyway.
2. A treasure e-commerce platform, various product information, comments, questions, etc. There are many original things that can be used as material.
3. News, Weibo's high-quality comments, these high-quality comments will not be included by Baidu. We just need to sort it out and become high-quality original articles.