This is a song about Manchuria, the Japanese viewed Manchuria as lifeline of Japan, owing to its resources and population. Today, Manchuria as a (disputed) nation no longer exists, but as parts of Dongbei China and Russia.
Translated by me, I do not support Japanese imperialism; may not be perfect because I'm not Japanese.
![](https://s2.save4k.ru/pic/Oxcz9Ie7uj8/maxresdefault.jpg)