"What is the haze in the northeast? There is smoke in the palace" refers to Xingqing Palace. Xingqing Palace was the residence of Emperor Xuanzong of Tang Dynasty when he was a vassal. After the reign of Emperor Xuanzong of the Tang Dynasty, it expanded on a large scale and became one of the three major cities in Chang 'an. It was the political center of China during the reign of Kaiyuan and Tianbao of Emperor Xuanzong of the Tang Dynasty, and it was also the place where he and his beloved Princess Yang Yuhuan lived for a long time. From Bai Juyi's Dunle Wang Yuan.

Original text:

Enjoy the garden alone and look around the sun.

The smog in the northeast is really heavy, and the palace is full of smoke.

Love is high above, and suddenly it is like a foul smell.

Eyes and ears are temporarily clear, and arms are depressed.

Overlooking 12 street, there is red dust among the green trees.

Cars and horses are full of eyes, but they are not loved.

Confucius was born and died in Luoyang, and Yuan Jiu fell in Jingmen.

The north-south road is poor, who is taller?

Boarding Wang Yuan is a five-character ancient poem by Bai Juyi, a poet in the Tang Dynasty. The whole poem is written from the "Palace Que" seen in the paradise, the "chariots and horses" running on the 12th street, and the "high-rise cars" on the "North-South Road", which skillfully blends the scenery of the success of small people and the downfall of big people. The whole poem is full of depression and injustice, expressing the poet's inner anguish that his ambition is hard to pay.