The ancient poems about the autumnal equinox are introduced as follows:

1. The autumn wind rises and the fallen leaves float. The cold dew falls and the autumnal equinox arrives. Day and night are equal, yin and yang are half and equal, and the cold and heat are equal. ——Du Fu's "Autumnal Equinox".

Appreciation: This poem was written by Du Fu, a poet in the Tang Dynasty, and describes the scene of the autumnal equinox. By describing the autumn wind, fallen leaves, cold dew and other natural scenery, as well as the astronomical phenomenon of the equinox of day and night, the characteristics of the autumnal equinox are highlighted.

The poet also used the image of Mount Tianping to symbolize the balance state of "yin and yang" and express the special significance of the autumnal equinox. The whole poem has profound artistic conception and concise language. Reading it makes people feel the beauty and calmness of the autumnal equinox.

2. The autumn moon is full in the four seas, the clouds are clearing and the fog is clearing, and the dawn is bright. People are like a dream in the fragrance of osmanthus, and a good night and a clear night enter the painting screen. ——Xu Xuan's "Autumnal Equinox Full Moon".

Appreciation: This poem was written by Xu Xuan, a poet of the Tang Dynasty, and describes the moon and the fragrance of osmanthus during the autumnal equinox. The poet describes the moon emerging from the clouds and the fragrance of osmanthus filling the air, presenting a fresh and bright picture.

The four words "good night and clear night" in the poem express the scene of people admiring the moon at night. The whole poem uses concise language to outline the beauty and tranquility of the autumnal equinox. Reading it makes people feel the beautiful atmosphere of reunion of people under the full moon.

3. The dew is wet, the clear flowers are fragrant, the palace is fragrant, and the moonlight song is blowing in the Zhaoyang. It's like adding sea water to the uterine leakage, and the water drips into the long door overnight. ——Lu You's "A sudden sadness after the autumnal equinox".

Appreciation: This poem was written by Lu You, a poet of the Song Dynasty. By describing the desolation of the autumnal equinox, it expresses the author's nostalgia for his motherland. The poem begins with a description of the palace and Zhaoyang Palace, showing a sense of solemnity and desolation.

Then the author uses the image of sea water causing uterine leakage to vividly express the pain of sleepless nights during the autumnal equinox. The last sentence "***drops Nagato lasts all night" further emphasizes this lonely and desolate atmosphere. The whole poem has a melancholy style and deep feelings.

4. One drink and one drink is the best, and the rest of the old hatred is broken. Yunqi did not go to Qingshan, and mistakenly recognized the three people as building a military residence. ——Li Gou's "Autumnal Equinox".

Appreciation: This poem was written by Li Gou, a poet of the Tang Dynasty. By describing the feeling of parting during the autumnal equinox, it expresses the author's longing for his friends. The poem begins with "One drink and a farewell", vividly depicting the scene of parting. Then the author expressed his deep nostalgia for the old hatred and his reluctance to leave his friend Yun Qi.

The last sentence, "Mistakenly identifying three people in Jianwu Ju" expresses the author's longing for his friends, implying that his friends are no longer around, but he can only spend this autumnal equinox alone. The whole poem has sincere emotions and concise language, which makes people feel the pain of parting and missing.