Under the crane cloak of the seventeenth year of Jiading, there is a secret more dangerous than imperial power. When Shi Miyuan opened the crown prince's robe, six women's gold hairpins and six men's blood letters fell at the same time - this carefully designed "cut sleeves" drama will eventually turn Lin'an City's colorful feathers into thunderbolts of Xiangyang City. Historians have never recorded that the lone goose rescued that year had a "Youzhou City Defense Arrangement Map" tied to its claws.