A farmer airs newly-harvested jujubes in Yutian County of Tangshan, north China's Hebei Province, Oct. 2, 2018. Farmers in Yutian are busy picking and airing jujubes during the harvest season in October. (Xinhua/Liu Mancang)

A farmer picks jujubes in Yutian County of Tangshan, north China's Hebei Province, Oct. 2, 2018. Farmers in Yutian are busy picking and airing jujubes during the harvest season in October. (Xinhua/Liu Mancang)

Jujubes are pictured at a plantation in Yutian County of Tangshan, north China's Hebei Province, Oct. 2, 2018. Farmers in Yutian are busy picking and airing jujubes during the harvest season in October. (Xinhua/Liu Mancang)