Jiangsu and Shanghai are neighboring provinces in China. If you asked about distance from border to border, then it will be zero. If you asked distance from specific city of Jiangsu to shanghai, then...
11,854.45 kilometres (7,366.03 miles)
9,372.83 kilometres (5,824.02 miles)
432 nautical miles
2,907.59 kilometres (1,806.69 miles)