After Yu Qingqing moved into a new home, she mistakenly took away the takeout of her next-door neighbor Yan Jiajia. The two got acquainted and developed a mutual affection. After Yan Jiajia left, her brother, Liyue Group CEO Yan Lang, saw the preserved flower and contact information left by Yu Qingqing, mistakenly thinking that Yu Qingqing was interested in him, and added her WeChat under the name "307". Yu Qingqing mistakenly thought the other person was Yan Jiajia, calling each other "wife" online for three months, frequently sending ambiguous messages, cheesy pick-up lines, and gifts. Yan Lang responded silently and cared for her in secret. During this time, Yu Qingqing had multiple contacts with Yan Lang at the company, but never saw through his identity until the day they met in person.