During the Spring and Autumn period (771-476 BC) the act of telling history was very prevalent. In such a historical background, the ethnic elites especially liked to tell historical stories on formal diplomatic occasions. This phenomenon can be proved in the Zuozhuan. The reasons of the phenomenon have two aspects: First, the education of "music and literature" paved the way for the elites to acquire the historic knowledge; Second, because of the decline in the status of historiographers, the elites had more opportunities to study the historical documents. Based on these aspects, the elites hold more power of speech than historians. Furthermore, the elites were good at making full use of historical stories in dealing with political affairs. They combined the historical knowledge with "Propriety" and "Virtue", and as a result, the historical stories had a more realistic significance than before.