What festival is it that spring city flowers fly all over the sky and Dongfeng eats cold food and willows?

The festival described in Spring City is full of cold food, and the east wind and willows are oblique is: cold food.

It means: In late spring, Liu Xufei falls everywhere in Chang 'an, and the east wind blows willow branches in the imperial garden at the Cold Food Festival.

Cold food: Tomb-Sweeping Day called cold food the day before, that is, no smoking festival. On this day, a new fire was drilled in the palace to burn candles and distribute them to the nobles.

Imperial willow: The willow in the imperial garden, the old custom breaks the willow into the door every time it gets cold.

Extended data:

Cold food/cold food is served every day.

What about (Don)?

In late spring, Chang 'an city is full of songs and dances, and countless flowers fall. The east wind of the Cold Food Festival blows on the willow trees in the royal garden.

As night fell, the palace was busy lighting candles, and smoke drifted to the house of the prince and the marquis.

"Spring City is full of flowers". "Spring City" refers to Chang 'an, the capital of spring. "Flying flowers", that is, petals fall in succession, indicating the late spring season. "Everywhere" constitutes affirmation with double negation, and then writes the charming spring scenery of the whole Chang 'an Liu Xufei.

"Cold Food: Dongfeng Liuxie" is about the scenery in the palace garden. "Imperial willow" refers to the willow in the imperial garden. At that time, it was a custom to break the willow door during the Cold Food Festival, and on Qingming Day, the emperor also issued a decree to give the fire of elm willow as a gift to the recent minister to show his favor. Therefore, the poet deliberately cut out the "imperial willow" fluttering in the wind in the infinite spring.

"At dusk, candles were passed in the Han Palace, and light smoke was scattered into the Five Emperors Hall." Sunset is evening. "Han Palace" refers to the imperial palace in the Tang Dynasty. "Five Hou" generally refers to five eunuchs who were sealed on the same day in the Eastern Han Dynasty. Here, the Han Dynasty is used as a metaphor for the Tang Dynasty, alluding to eunuchs who have been favored by the emperor since the middle Tang Dynasty.

Every family can't make a fire on the Cold Food Festival, but the palace is an exception. Before dark, the palace was busy distributing candles. In addition to the palace, your near minister can also get this favor.

The poem vividly depicts a picture of candles passing by at night with "passing" and "scattering", which makes people see the light of candles and smell the faint smoke. It is a long-standing custom in China to ban fire from cold food, but powerful ministers can make an exception and place candles. The poet made a euphemistic satire on this corrupt political phenomenon.

References:

Cold food (poems by Han Yi in Tang Dynasty) _ Baidu Encyclopedia