Many Japanese deities and myths originate from Buddhism, so Indian, Chinese and other similar folklore has been assimilated into Japanese culture ( Japanese mythology - Wikipedia). I wouldn't say Chinese culture has been (culturally) "appropriated", but rather that it's been assimilated. It's similar to how "Noah's Ark" (in the Christian Bible) seems to have been "appropriated" from other cultures ( Genesis flood narrative - Wikipedia ) Regardless, "Inuyasha" was based on Japanese folklore and was set in ancient Japan. However, it seemed that the writer used a Chinese mystical spring, plus associated mythology, as part of her previous work in "Ranma 1/2". (Source: - Inuyasha - Wikipedia ) Aaaand blocked and reported for racism.