As a proposal to start a new column of ontology to study Chinese vocabulary and its law of development, the present paper makes an investigation, from ontological viewpoint, into the basic motive and internal law of meaning extension and word derivation system in the course of the formation of the noun 'shi(time)'. Basing themselves upon the reality of agricultural cultivation, the forefathers of the Chinese made profound consideration of and planned their way of existence, sought for the harmonious unity between their way of existence and natural environment, and rendered it the symbol of lin...