I have been learning Japanese 四字熟語 as a passtime for sometime and I would like to know whether most of them can be used verbatim in Chinese or if there are Japanese-made yojijukugo which cannot be used in Chinese.
I don't have a Chinese 成语 dictionary, but most of the 四字熟語 that I know are absent from CEDICT. However, some blog posts such as this one would suggest that a large part of them can be used in Chinese as well.
What is the overlap between 四字熟語 and 成语?