When Shen Hengzhi was thrown out of the door by the Shen family, the mark of the ninth-grade abandoned daughter on her face was still bleeding. She knelt in the mud and heard the laughter of her eldest sister Shen Mingzhu: "A ninth-grade humble maid, is she worthy of the surname Shen?" Prince Su Xiao Yan's carriage stopped in front of him. The young man opened the curtain and took a look, then casually said: "Pick it back and wash the clothes." On the first day of entering the mansion, the maid stepped on her hands; on the second day, the steward slapped her. On the third day, King Su was injured while suppressing the bandits and was carried into the palace covered in blood. The imperial doctor shook his head and said that he could not be saved. Shen Hengzhi was pushed to the bed and knelt down to cry in mourning. She raised her head and glanced at the prince. Her tears were not yet dry, and she accidentally pulled a smile from the corner of her mouth. The wound heals at a speed visible to the naked eye. The crazy war horse calmed down, and even the begonias in the yard that had been withered for three years bloomed. Prince Su opened his eyes and held her chin: "Laugh again." Shen Hengzhi shook his head: "If I smile once, I will lose one year of my life and forget things." The young prince stared at her for a long time and suddenly smiled: "Then from today on, whoever makes you cry, I will let him cry for the rest of his life. As for you -" He pulled her onto the couch and pressed her to his chest, "Smile to me once a day, and I will help you remember the things you forget." When the news spread, the entire capital exploded. The ninth-grade abandoned daughter became King Su's favorite, and Shen Mingzhu was so angry that she broke a whole set of phoenix crowns. The elder of the female training department came to the door in person to accept Shen Hengzhi as his disciple, because the elves prophesied that the Phoenix would bring peace to the world with a smile. But Shen Mingzhu refused to give up. She bribed the dream fortune teller and entered Shen Hengzhi's dream to tamper with her memory.