Can't be completely repeated. Big papers and small papers are two different types of papers. Generally speaking, small papers are further studied and discussed on the basis of big papers, so there will be some repetition in the content. However, this repetition should be necessary and reasonable, and should be clearly pointed out when quoting.
If the contents of a big paper and a small paper are exactly the same, or there is no reasonable quotation and explanation, it may be considered as academic misconduct. Therefore, when writing small papers and big papers, we should pay attention to avoid excessive repetition and remember to quote relevant literature.