What meaning or emotion was given to swallows in ancient poetry?

In China's poems, swallows are literary images with various symbolic meanings.

(1) Nostalgic Swallow. As an image of nostalgia for his former residence, Liu Yuxi, a poet in the Tang Dynasty, wrote a nostalgic poem "Wuyi Lane": "Weeds are blooming by Zhuque Bridge, and the sun is setting at the entrance of Wuyi Lane. In the old society, Wang Xie Tang Qianyan flew into the homes of ordinary people. " From this poem, "Wang Xie Tang Qianyan" became the most commonly used nostalgic symbol in China culture.

2 the daughter of spring. China poets are especially good at associating swallows with spring. Tao Yuanming has a quasi-ancient poem dedicated to the swallows in spring. Bai Juyi's Spring Tour in Qiantang: "Gushan Temple is in the north of Jiating West, and the initial water level is low. Several early warblers compete for warm trees, and their new swallows peck at the soil in spring.

(3) the symbol of love. In particular, the swallows, who live in pairs, fly in pairs, are pinning China people's yearning for beautiful love. Poets also use this to express the sadness and joy of love. Yan Shu's "Dead Hua Lian" "The threshold chrysanthemum worries about smoke and tears, the curtain is light and cold, and the swallows fly away. The bright moon doesn't know how to hate bitterness, and the light shines obliquely through Zhu Hu. " Yan Dao Ji's Linjiang Fairy: "When hate came last spring, the fallen flowers were independent and the swift flew together."