How to understand the meaning of "Qing" and "Jing" in autumn in the old capital?

Express ordinary autumn posture, autumn color, autumn sound and autumn taste through ordinary little things.

Autumn in the Old Capital written by Yu Dafu has the characteristics of being clear, quiet and sad. It does not lay out ancient temples and has no traditional "autumn" color code, but expresses ordinary autumn posture, autumn color, autumn sound and autumn taste through ordinary small things. Autumn in the old capital, inside and outside every low house, in front of the locust trees on both sides of the street and in the high sky, makes the theme of the article more interesting.

Appreciate:

In his article, he simply mentioned the famous scenery, but capitalized morning glory, Sophora japonica, Qiu Chan, autumn rain and autumn jujube are all common scenes in the daily life of ordinary people in Beiping.

But according to Yu Dafu's description, the ordinary scenery has an extraordinary taste, while the small things have the autumn taste of the old capital. Because what he wrote is the traditional charm, the charm and taste of Beijing, and the clear, quiet and sad characteristics of autumn in the north, it can arouse readers' admiration after reading it.