Cost of living in Koriyama (Japan) is about the same as in Zhuhai (China)
WARNING! This comparison is based on only a few data points. At this point it is only a guess. It is based on 43 prices entered by less than 5 different people.
For example, to keep the same standard of living that would require 元12,000 in Zhuhai you would need to make just about 元11,916 (¥203,562) in Koriyama.