The ancients 'choice of the 12 animals of the Chinese zodiac and the order in which they are arranged no doubt had its own logic, and since that time people have tried to fit many facts into the same theoretical framework to suit their various needs.
古人對於十二生肖的選擇與配置，應有一套邏輯，尤其十二生肖確定後，後人更加以「自圓其說」，以符合種種需求。