Time for a movie in such a hot summer day, Yi Yi, directed by Edward Yang.
The movie ends with the 8-year-old boy's speech at his grandmother's funeral:
"I'm sorry, Grandma. It wasn't that I didn't want to talk to you. I think all the stuff I could tell you... You must already know. Otherwise, you wouldn't always tell me to 'Listen!' They all say you've gone away. But you didn't tell me where you went. I guess it's someplace you think I should know. But, Grandma, I know so little. Do you know what I want to do when I grow up? I want to tell people things they don't know. Show them stuff they haven't seen. It'll be so much fun. Perhaps one day... I'll find out where you've gone. If I do, can I tell everyone, and bring them to visit you? Grandma, I miss you. Especially when I see my newborn cousin who still doesn't have a name. He reminds me that you always said you felt old. I want to tell him that I feel I am old, too."
The original title of the film is "Yi Yi", the English version is "A One and A Two".
It's a story of everyone has two sides: front and back.
A one is the life we see in the cover, another one is the truth behind, like the mirror reflection of the other.
So a one with its back is a two.