Falling gon the same date as the Chinese Mid-Autumn Festival, Chuseok is a big deal;

韩国的秋夕节是个大日子，正好与中国的中秋节在同一天；

youdao

Korea's Chuseok festival is a celebration of the harvest that could be likened to Korean Thanksgiving.

韩国的中秋节是庆祝丰收的节日，有点像韩国人的感恩节。

youdao

The Chuseok festival, a harvest celebration, sees millions of people engage in a mass exodus back to their ancestral villages.

在秋夕，一个庆祝丰收的节日，上百万人加入了返乡祭祖的队伍之中。

youdao

Tentatively,the two countries hope to hold a reunion in the beginning of October, when Koreans celebrate the thanksgiving holiday of Chuseok.

VOA: standard.2009.08.26

On Lunar New Year and the autumn harvest holiday Chuseok, the entire country takes part in ancestor rites.

BBC: A free meal with South Korea's monks

Once a rare break from restrictive rules governing the behaviour of rural young women who were not allowed to sing aloud or go out at night, except during the Chuseok Thanksgiving celebration, the ritual is mostly preserved today by middle-aged women in cities and taught as part of the music curriculum of elementary schools.

UNESCO: Culture