Why would Red China throw away 40 years of modernization and increased trade just to save a tiny country? Who will feed the hundreds of millions of Chinese thrown out of work?
Agreed. It's not as if they are enemies with South Korea.
Why would North Korea risk a war knowing the end result would be total annihilation?
There’s a lot of moving parts here.
China doesn’t want nuclear fallout on its border.
China doesn’t several million radidated, starving refugees storming its border.
At the same time, China doesn’t want a unified, Western Korea on its border.