1 When the world was upside down, I was thinking of you.
2. When I miss you, the world is upside down.
3. I open the hardest shell of the crab, leave the softest heart to you, and leave the blank space in the notebook for you to write.
4. Only when the world is upside down will you miss me.
Only when the world is upside down will you fall in love with me.
I am shelling a crab, I am writing a notebook, maple leaves and snowflakes all over the sky fall on me, and I am thinking of you.