In this paper, the author successfully shows twelve kinds of constructive rationalities following the Neo-Confucian construct of causal chains in enterprise operations. The twelve rationalities are as follows: the array-rationality of causal chains, the sequence-rationality of productive inputs, the sequence-rationality of productive 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.