Yangzhou Xiangong Food Factory. Yangzhou Xiangong Food Factory, located near Fangzheng Hotel in Suo Qi Road, is a traditional food production enterprise with decades of history. The square cakes made are crisp but not hard, soft but not sticky, and melt in the mouth, sweet and pleasant. Yangzhou, a prefecture-level city in Jiangsu Province, is located in the middle of Jiangsu Province, on the north bank of the Yangtze River and at the southern end of the Jianghuai Plain, with a total area of 659 1.2 1 square kilometer.