Proof for the Rest of my life (余生为证) (Opening song) by: Shao Xingying - Please Be My Family OST

Proof for the Rest of my life (余生为证) (Opening song) by: Shao Xingying - Please Be My Family OST Drama Story: To pay for the costs of her daughter Xuan Xuan's brain surgery, Qi Si Le wants to acquire the Maolin planning project. She is also actively pursuing Song Hao Yu, Maolin's boss. While assisting his son Chen Cheng in selecting a birthday present, Song Hao Yu notes that Qi Si Le is sporting a brooch that matches the one Chen Cheng owns. Song Hao Yu eventually establishes the connection between Xuan Xuan and Chen Cheng by using the brooch's clue. Song Hao Yu proposes to Qi Si Le, and the two of them start a marriage with an unknown future in order to give the two kids a full family.