The Shado-pan seem awfully Japanese to me.
Kun-Lai Summit seems awfully Tibetan to me.
Townlong Steppes seems awfully Mongolian/Middle Eastern to me.
The lower half of the Valley of the Four Winds sounds awfully Vietnamese/Southeast Asian to me.
The upper half of the Valley of the Four Winds indeed seems Chinese to me.
The Vale of Eternal Blossoms seems awfully Japanese to me as well.
The Jade Forest seems like a blend of Southeast Asian jungles and bambus Chinese forests to me.
Mists of Pandaria is pan-Asian.