The solar term closest to the swallow

Vernal equinox, white dew and autumn equinox;

1. "When the vernal equinox is waiting, the mysterious bird will arrive" and "When the dew is waiting, the mysterious bird will return". In ancient times, this mysterious bird was called swallow. Swallows are summer migratory birds, and their migration is very regular.

At the vernal equinox, swallows will migrate to the north. At this time, the spring has been obvious in most parts of northern China. Therefore, swallows are also called messengers of spring. As soon as they appear, they are reminiscent of pink and green spring.

3. When the Millennium heat faded and the weather became colder, Yan Qun flew south again, to Guangdong, Hainan, and even India and Nanyang Islands to spend the long winter.

4. The activity time of swallows in China, between the vernal equinox and the autumnal equinox, is the biological clock of the four seasons, accompanied by the germination of grass, the blooming of flowers and the withering of grass trees.

Swallows are generally hermaphroditic when they return to their nests, and they will lay eggs and hatch from April to July. * * * Growing up with little swallows, they can breed two nests every year. The time when swallows were stolen coincides with the time when they gave birth, and typical spring phenology such as swallows has also become a symbol of marriage and childbirth.