What festival is this poem about cold food?

What holiday scene is written in the poem Cold Food?

Cold Food Festival is a traditional festival in ancient China, which usually takes place from winter to the day after 105 and two days before Tomb-Sweeping Day.

There are many works of the same name in Cold Food:

Han Yi's poems in Tang Dynasty, Shen Quanqi's poems in early Tang Dynasty, Zhao Ding's poems in Song Dynasty and Meng Yunqing's poems in Tang Dynasty,

Poems by Du Fu in Tang Dynasty, Poems by Zheng in Song Dynasty, Poems by Wang Yucheng in Song Dynasty,

Wang Jian's poems in Tang Dynasty, Sui Yu's poems in late Tang Dynasty, Hong Sheng's poems in Southern Song Dynasty and Liu Kezhuang's poems.

For example:

An outdated festival (Qingming Festival) that started one or two days ago in Tomb-Sweeping Day, when only cold food is served for three days.

Tang Dynasty: Han Yi

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.

I hope it helps you.