Following grapes on a funneled path

Grapes are grown almost everywhere there is human habitation.

But most vineyards take up vast tracts and are not too close to human dwellings. In Xuanhua, 150 kilometers northwest of Beijing, grapes are the mainstay of residential backyards.

Within the 12-km old city wall are 1.5 square km of vineyards out of a total of 9.7 square km of land. That is the figure from 2013 when "Urban Agricultural Heritage of Xuanhua Grape Gardens" was listed by Food and Agriculture Organization of the United Nations as a "globally important agricultural heritage system".