ShintaiDK
Lifer
The Chinese are smart enough not to let this issue tip over into a real conflict since it would never turn out to their advantage. There are only ways to loose here. That's won't stop them from leveraging it to maintain/increase regional influence.
Failing all else the US has been attached at the hip strategically with Japan since the end of WWII and it is no secret. We (and other western countries) supply the JSDF with top of the line military equipment in addition to their own quite capable domestic arms industry. Any major conflict would only serve to embarrass the Chinese as militarily impotent beyond their land borders.
Oh yes, we are already stuck fighting small backwards countries with camelriders. And you think we would easily defeat a 1.35 billion people well running country? Hah.
There can only be losers, all sides.
Wars belong to the past.