What is the meaning of "late" in "late autumn"?

Autumn standing in the evening: early autumn and evening are particularly cool.

Said by: an autumn night in the mountains of the Tang Dynasty: Wang Wei

The empty mountains are bathed in a new rain, and feel the early autumn at night.

The bright moon shed clear light from the cracks and cleared the fountain on the rocks.

The bamboo forest is sonorous, the washerwoman returns, and the lotus leaves are swaying to get on the canoe.

Spring spring might as well give it a rest, and the autumn sun can stay on the hills for a long time.

Translation:

After the new rain, the valley is empty and fresh, and the weather is particularly cool in early autumn and evening. The bright moon reflects the quiet pine forest, and the clear spring water flows on the rocks. The girl in the bamboo forest came back from washing with a smile, and the lotus leaves swayed in the canoe. Although the beauty of spring has faded, autumn scenery in front of us is enough to make people linger.

The poem "Yan Xi" was written in early autumn, and the author saw the scenery at dusk after the rain in his place of residence. This should have been written by Wang Wei when he lived in seclusion in Zhong Nanshan and went to Wangchuan.

The first couplet is about autumn scenery in the mountains after the rain; It is already dark, but there is a bright moon in the sky; The square group has withered, but there are pines like a cover; The poet writes "Bamboo Noisy" first and then "Lotus Movement" in the Neck Couplet, which makes the poem more authentic and poetic. Couplets are the poet's feelings. Although spring has gone, autumn is better and I would like to stay. He likes to return to nature, cherish mountains and rivers, advocate a quiet and indifferent pastoral life, and is unwilling to go with the flow.

This poem expresses the poet's personality beauty and an ideal social beauty with natural beauty. On the surface, this poem only uses the method of "Fu" to shape mountains and rivers, and gives a detailed and touching description of the scenery. Actually, it's full of comparisons. The poet expresses his ambition through the description of the scenery, which is rich in content and intriguing.