Regarding the interpretation of "Under Mount Fuji", Mr. Xi himself said this:
When you like someone, you like Mount Fuji.
You can see it, but you can't move it.
Is there any way to move Mount Fuji? The answer is, you can walk there yourself.
The same is true for love, just shopping is enough.
The title of the novel comes from "Half a Sentence of Goodbye" written by Stefanie Sun.
Concept: The results of secret love in all novels are happy, but reality is not