I think what made this show was the simplicity of their love, although reaching crossroads in life (just like how real life is), they choose to believe in each other and their bond. This only makes them grow closer and make them more enjoyable for viewers. They are simply amazing and you should definitely watch if you want a couple that doesn't let anything get in their way. Besides that the OST by Duan Aojun is simply amazing and was so nice to hear throughout this show. All of her songs seemed to be well written.