In Shanghai, which fell in 1941, Ye Zhiwei, a young apprentice at a cheongsam shop in the French Concession, stepped on the sewing machine and measured the waists of customers every day. He didn't know that the lining of every cheongsam his master asked him to send was sewn with the coordinates of the military factory written in rice soup. Until that rainy day, the master fell in a pool of blood and stuffed half of the jade pendant into his palm.
