It is the most important method to check the scale through literature! Use keywords directly to search for papers in HowNet to see if there are any scales you want in papers with high relevance!

(Most colleges and universities will provide off-campus access to HowNet for students to download articles. Freshmen and sophomores can go to the library to look at related tutorials. )

Here, we must realize that Chinese documents are rarely marked, while foreign documents are much more likely to be marked. Next, I will tell you something about China literature and foreign literature.