Relations between the Class Words of "Xingkui" and the Fixed Phrase of "Xingkui"

The Romance of the Three Kingdoms and The Water Margin contain a large number of fortunate class words,but there is no direct expression of Xingkui which also means fortunately.Xingkui is classified as Xing(幸) and Kui(亏),the two kinds of words emerge in large numbers with the semantic foundation fortunately.Kui and parts of Xing can be replaced by luckily.Two kinds of words indicate that the story teller is lucky while the listeners are not.The minor sentence subject behind it is the object of loss.Therefore,Kui follows Xing closely,and this is the important reason that there exists xing kui(幸亏) rather than kui xing(亏幸).