It seems @SOSHaruhi101 hasn't been on the boards for more than a year. You might be waiting a long time for an answer.
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There's a mod for CK3 called the Asia Expansion Project. Perhaps that is what was used here. However, only the author would be able to tell us that with certainty unless other mod players recognized outcomes from the screenshots.
I do not play CK3, and thus do not use that mod, so I cannot answer your question.
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