Furusato No Ut
This is a Qingyuan flute.
It's always on a moonlit night
besiege
The face of hometown
But this is a vague disappointment.
As if in the fog
Wave goodbye
After parting
Homesickness is a tree without rings.
Never grow old.
After parting/homesickness is a tree without rings/never aging (section 3)
The last paragraph of the poem concentrates "homesickness" on a tree without rings, which fully expresses that "homesickness" will never disappear because of people's aging, but will always be fresh.