It’s not summer but terrible, it’s not autumn but sad. ——Yu Xin's "Ode to a Small Garden"
Outside the sparse forest, half of the autumn mountains are covered with the setting sun. ——Kou Zhun's "Books on the Pavilion Wall on the River"
Good paintings of reunion on a bright moonlit night, the colors of Mid-Autumn change to spring. ——Fang Hui "Retitled August Apricot Blossom by Wang Rong of Tongzhengyuan·Zhongzhuan Dong Fengshu Han Xiang"
Don't lean on the railing to hurt your eyes, for the autumn day in the world is easy to tilt to the west. ——Zhang Xi's "Three Poems in Nine Days: Climbing High and Not Used in Huaiqi County"
The building boat is crossing Guazhou in the snow at night, and the iron horse is blown away by the strong autumn wind. ——Lu You's "Book of Indignation"
In our country, the "Beginning of Autumn" of the 24 solar terms is traditionally used as the starting point of autumn. Entering autumn means that rainfall, humidity, etc. tend to decrease or decrease. In nature, the yin and yang qi begin to change, the yang qi gradually recedes, the yin qi gradually grows, the climate changes from hot to cold, and everything grows with the cold, and gradually declines.