oh no u r not about to label it XianXia in that genre the character become A GOD AND LIVES ON FOREVER. And avatar does not use a single but of Chinese mythology. U don't think know enough Chinese mythology to be saying this. And honey the 異 in 異世界 literally means different
Xuanhuan (玄幻 xuánhuàn) – literally means “Mysterious Fantasy”. A broad genre of fictional stories which remixes Chinese folklore/mythology with foreign elements & settings.