When do peach blossoms and chrysanthemums open riddles?

Guess what? Didn't say. But judging from the riddle, it is more likely to guess the name of an ancient book or the period of China's ancient history. If so, the answer is Spring and Autumn or Spring and Autumn. Because when does the peach blossom bloom? Spring. When will the chrysanthemums bloom? Autumn. So the answer is spring or autumn.

Spring and Autumn Period: Spring and Autumn Period, also known as Lin Jing or Lin Shi, is one of the six Confucian classics in ancient China. China's First Collection of National Historical Records and History. As a chronicle of Lu, it was revised by Confucius.

Spring and Autumn Period: The Spring and Autumn Period is the disintegration period of slave society in China's history. There are generally three opinions about the beginning and end of this period: one thinks it is 770-476 BC; One view is that from 770 BC to 453 BC, Han, Zhao and Wei lost their wisdom; Another view is that from 770 BC to 403 BC, Han, Zhao and Wei were divided into Jin. Lu historians recorded the major events reported by various countries at that time by year, season, month and day, and recorded them in spring, summer, autumn and winter in a year. In a word, they named this chronicle Spring and Autumn Annals.