These foreigners in Xinjiang are all professional cotton pickers, so they are called flower pickers. Since the reform and opening up, the rapid rise of cotton industry in Xinjiang has attracted a large number of migrant workers from Gansu, Shaanxi, Sichuan, Chongqing, Henan, Shandong, Jiangsu and other places to flood into Xinjiang, which constitutes a unique social phenomenon in Xinjiang. Every autumn, cotton in Xinjiang cotton-producing areas is mature, and farmers can't finish the task of picking and harvesting by themselves. It is necessary to recruit many foreigners to participate in cotton production and harvesting activities.