Yin Changning was the eldest princess written in the jade ultimatum by the late emperor. She once personally helped Xiao Jingyan ascend to the throne of God, but died from the sweet-scented osmanthus wine he handed her. When she opened her eyes again, she became Shen Yu, a Hanlin girl who was about to marry into the East Palace. She thought this was a revenge game after the corpse was resurrected, but she discovered in the old music score, Seventh Tone, Songzhu Tea House, Xinglin Crossing the North and the sealed box in the old warehouse: Shen Yu's body had long been measured, recorded, and demerited. The old minister wanted to use her to inherit the name of the Holy Queen, and the emperor wanted to use her to prove that the immortality technique was feasible. She is not a miracle of destiny's return, nor is she evidence of someone's return. Deep inside the red wall, everyone wanted her to become a door, but Yin Changning insisted on closing it with his own hands.