This is a beautiful Love Story between Gu Yi and Lian Dai Wen (LDW) who fall in love when they meet at Ounce. LDW suffers from a medical condition alexithymia "emotional blindness" the inability to laugh and they call him the "Robot". This story tells the suffering of losing your mom at young age and how it affected LDW. With the help of Gu Yi, she teaches him how to develop and express his emotions. There are many different scenes that are funny, action-oriented, and emotional. The family scenes were so intense and Gu Yi's crying scenes were unreal the Best I've ever scene. There is a lot of cliffhangers and surprising events that keep you wanting to watch more episodes. The love story is pure and it has a happy ending. We definitely need a sequel, Smile Code 2. The cinematography and music were amazing. This drama should be picked up by Netflix for international audiences they will love it. This is the Best Acting for Shen Yue in a modern drama, she deserves an award for playing Gu Yi. The rating on this drama is a 10 out of 10.