A worker demonstrates as he threads a needle with hollow noodle in a factory in Gengjiazhuang Village of Gaocheng District in Shijiazhuang, capital of north China's Hebei Province, Nov. 23, 2018. The fine dried noodle produced in Gongcheng, formerly article of tribute to the imperial family, is famous for its thin but hollow strings that is a result of more than ten working procedures. (Xinhua/Chen Qibao)
A worker makes noodles in a factory in Gengjiazhuang Village of Gaocheng District in Shijiazhuang, capital of north China's Hebei Province, Nov. 23, 2018. The fine dried noodle produced in Gongcheng, formerly article of tribute to the imperial family, is famous for its thin but hollow strings that is a result of more than ten working procedures. (Xinhua/Zheng Yaning)
A worker examines noodles in a factory in Gengjiazhuang Village of Gaocheng District in Shijiazhuang, capital of north China's Hebei Province, Nov. 23, 2018. The fine dried noodle produced in Gongcheng, formerly article of tribute to the imperial family, is famous for its thin but hollow strings that is a result of more than ten working procedures. (Xinhua/Zheng Yaning)
Photo taken on Nov. 23, 2018 shows a bowl of cooked Gongcheng noodle in Gengjiazhuang Village of Gaocheng District in Shijiazhuang, capital of north China's Hebei Province. The fine dried noodle produced in Gongcheng, formerly article of tribute to the imperial family, is famous for its thin but hollow strings that is a result of more than ten working procedures. (Xinhua/Liang Zidong)
A worker packs the dried noodles in a factory in Gengjiazhuang Village of Gaocheng District in Shijiazhuang, capital of north China's Hebei Province, Nov. 23, 2018. The fine dried noodle produced in Gongcheng, formerly article of tribute to the imperial family, is famous for its thin but hollow strings that is a result of more than ten working procedures. (Xinhua/Chen Qibao)
A worker makes noodles in a factory in Gengjiazhuang Village of Gaocheng District in Shijiazhuang, capital of north China's Hebei Province, Nov. 23, 2018. The fine dried noodle produced in Gongcheng, formerly article of tribute to the imperial family, is famous for its thin but hollow strings that is a result of more than ten working procedures. (Xinhua/Zheng Yaning)
A worker makes noodles in a factory in Gengjiazhuang Village of Gaocheng District in Shijiazhuang, capital of north China's Hebei Province, Nov. 23, 2018. The fine dried noodle produced in Gongcheng, formerly article of tribute to the imperial family, is famous for its thin but hollow strings that is a result of more than ten working procedures. (Xinhua/Zheng Yaning)
A worker makes noodles in a factory in Gengjiazhuang Village of Gaocheng District in Shijiazhuang, capital of north China's Hebei Province, Nov. 23, 2018. The fine dried noodle produced in Gongcheng, formerly article of tribute to the imperial family, is famous for its thin but hollow strings that is a result of more than ten working procedures. (Xinhua/Liang Zidong)