Xiao Yunzhao, the seventh princess with the least presence in the Daqian Dynasty, was bound to a vest system after an accident. In order to live a stable life and continue to be a salted fish waiting to die, she had to put on various vests given by the system to complete one fatal mission after another. The first task is to put on the "miracle doctor" vest and cure her sick prince brother. From then on, Xiao Yunzhao repeatedly jumped between Xianyu and King Juan, clutching his little vest, and walked a different path in the palace full of calculations.