"I'm older than you"
"Only one year old"
"One second is big"
"Then... Just think of us as siblings."
"It's long gone out of fashion."
"Then... Just think of us as retro... And then lead the trend."
...
"I'm going to Canada. If you agree, I won't leave."
...
See you again in ten years and repeat that conversation again. Will the ending be different?
The man came riding a bamboo horse, went around the bed to make green plums, and lived together in Changgan, and the two children had no doubts.