The whole ancient poem says that cold food happened on the same day.

Cold food/cold food is served every day.

[Tang Hanyi]

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.

Vernacular translation

In Chang 'an in late spring, catkins are flying all over the sky, and the east wind of the Cold Food Festival blows the willow branches of the imperial garden. As night falls, the palace is busy distributing candles, and the light smoke from lighting candles is scattered into the homes of princes and nobles.

Extended data:

From Baidu Encyclopedia

Cold Food is a poem written by Han Yi, a poet in the Tang Dynasty. The first two sentences of this poem describe the scenery during the day, the charming spring scenery and the scenery of the whole court garden in Chang 'an. The last two sentences are about the night scene, which vividly draws a picture of candles at night, making people see the light of candles and smell the faint smoke. The whole poem is realistic by line drawing, depicting the royal style, full of intoxication of the spring scenery of the imperial capital and singing of Chengping in the prosperous times.

Appreciation of Famous Sentences-"Flowers fly everywhere in Spring City." This is a satirical poem, and its meaning is very euphemistic. Before the Tang Dynasty, the Han Dynasty was the most powerful, so people in the Tang Dynasty liked to write poems in Korean. Here, the story of the Han Dynasty is also used to satirize the dynasty. Cold food should be burned for three days and should not be used on the fourth day. But at dusk on the third day, the palace gave candles to the emperor and his relatives. This incident shows the emperor's special love for nobles, but the poet wrote euphemistically, starting with the wonders of flying flowers in the spring city, and the description of the east wind blowing willows naturally led to the emperor's official, as if praising the emperor's favor, so even the emperor liked it. This way of writing achieves the ironic effect of not criticizing every word, which is called implication. If we ponder it carefully, we can taste the implied irony.

Meaning.