Why does the Messiah have to be Western?
Perhaps, some long long time ago, one of the Boddhisattvas (a female) wrote a sutra pertaining to the idea of an avatar bringing the world into harmony. It isn't really read that seriously at the time, but after Confucius, Mencius, and Lao Tzu get their hands on philosophy, paired with the teachings of Harmony and Taoism, this particular sutra makes more sense. It spreads like wildfire, and sometime in between dynasties (because Chinese history is so BORING....dynasty after dynasty after dynasty with civil war in between) and she is a student of this school of thought. She raises the bar a notch, people get their shit together, the civil war ends, and later she is deified with the message that she is the promised avatar to bring the world back into balance.
In the short term, they see this as Jung Gue coming into balance (which happens during her life), but later on, they see it as a promise of future peace, much like the evolution of Christianity went through.
Boom. Chinese Messiah. And she's female.