The leading theory to explain this phenomenon is divided into four main faction They are: theory of RMB exchange underevaluation, theory of orientation of international division of labor, two-gap theory and global imbalance theory. 对导致这一现象的理论解释主要分成四派,他们分别是:人民币汇率低估论、基于要素禀赋的国际分工定位论、储蓄&投资缺口论、和全球经济失衡引致论。