- Military strikes on Chinese mainland targets: while China may gain a nascent ability to retaliate against the homelands of faraway adversaries, this would be disproportionate in favor of the US & her allies. Any Chinese strike on CONUS (or other countries in that vicinity) would be mostly symbolic
But besides US, all the other coalition of aggressors are all close to China. No, it would not disproportionately favor US, rather it would severely favor China.
- while the latter's strikes on China would do real damage.
At most, concentrated attacks from Japan, Korea, Philippines could maybe apply as much damage as Resistance attacks on Tel Aviv. I.e. Sow some fear and concern, get a few hundred thousand jumpy people to evacuate etc.
In return, these nations face a very real possibility of wholesale annihilation. For example Philippines only has 8 shorad vehicles to their name, a level of air defense that is far inferior to even Saddam's Iraq.
- Attacks on Chinese shipping & naval vessels: this ties in with the blockade scenarios above, but this is still a very real possibility, even when dealing with "easy" opponents.
China is a continental power, while the new imperial axis is a network of island states + US. In wartime, the amount of non-military shipping China does is minimal, while the likes of Australia, Japan etc still need to ship between eachother in order to sustain their functions.
Not only will there be an air campaign, but likely 10 000 - 100 000s of seaborne UAVs being used to deny the new Axis members from reinforcing eachother. Ports like Tokyo, Manila etc will have hundreds of small sea UAVs coming in on a daily basis. They would attack both military shipping but also the vital container ships used to maintain the invader alliance's supply lines.
The obsession with hitting CONUS is madness. Why surrender all your home court advantages, when there's so much softly defended de facto US territory in Asia that China can annex to fuel its war effort?
Island hopping has always, always, been the name of the game. Not idiotic cross map bombing of US (although China probably tries it a few times just to make US waste air defenses in North America).