In this paper,the author successfully shows twelve kinds of constructiverationalities following the Neo-Confucian construct of causal chains in enterpriseoperations.The twelve rationalities are as follows:the array-rationality of causalchains,the sequence-rationality of productive inputs,the sequence-rationality ofproductive outputs,the I-Li(易理)-rationality of Ssu-Hsiang(四象),the I-Li-rationality of San-Tsai(三才),the vision-rationality of white-box,the definition-rationality,the presentation-rationality of longitudinality,the practice-rationality,the three-meanings-rationality of I(易),the I-Li-rationality of Wu-Hsing(五行),and the order-rationality of Heaven(天)in Wu-Hsing.