At the age of 18, Mu Yunheng jumped from a rejected illegitimate daughter to the young mistress of the Gu family, and then fell into Gu Jue's wolf's den. Gu Jue said to her: In this life, you will stay by my side, whether you are born, old, sick or dead, you are not allowed to go anywhere. She lowered her eyelids and answered softly: OK! There was warm sunshine outside, and there was a gentle whirling sound of wind between them. Mu Yunheng thought that since he couldn't escape, he would just stay entangled with him for the rest of his life.