Su Miaoyan was originally an embroiderer in a folk embroidery workshop. An embroidery art competition was held in Jiangnan in March, and the youngest embroiderer in the Su Family Embroidery Workshop won the first prize. He was waiting to be eligible for the official tribute, but what was waiting for him was the eunuch's message, "By God, the emperor called: Check the 'Phoenix Wearing Peonies' picture presented by Su's embroidery workshop. It is similar to the 'Neon Clothes and Feather Clothes Pattern' that was lost in the palace. It is suspected of stealing the palace's secret technique. Su Miaoyan, the embroiderer, immediately entered the palace to await trial. I hereby--"
Su Miaoyan was chosen as a stand-in because her appearance was similar to that of Bai Yueguang, the emperor who died young. He was good at using embroidery to hide secret messages and used embroidery design to resolve crises. He had an eccentric personality. The emperor was cold and majestic and suffered from severe headaches. He could only be relieved by seeing Su Miaoyan's embroidery drawings. He silently collected all Su Miaoyan's designs. The two redeemed each other in the struggle for power.