Hi Sherrardk:
Southern China has, until recently, had a diet based upon rice, rather than upon wheat. However wheat products are now rising in popularity to such an extent that wheat prices on commodities markets have risen considerably. (The fact that bread in UK supermarkets has got far dearer over the past few years is largely attributed to the increased consumption of wheat by the southern Chinese).
However northern China has always been a wheat-growing area, but with the bread being steamed rather than baked:
http://en.wikipedia.org/wiki/Mantou
Chris