Song Qinghuan passed through the book and became the "real daughter" who met the worst end in the novel about wealthy families. In the original plot, she was unwilling to be replaced by a fake daughter, acted mischievously, and was eventually rejected by her entire family and died tragically. In order to survive, she did two things: never get close to the Song family, and quickly marry the most ordinary man as a backdrop. The blind date is Gu Leng, a "programmer" who works overtime every day, lives in a rental house and wears old sweaters. Song Qinghuan is satisfied: the safety system is 100%.