China should just STFU and refrain from issuing any statements. No one in the West takes them seriously, and that's because, despite being huge in resources, military, and economy, they chose to sit out just about every conflict (like an obedient child), whilst each and every one of their 'ally' was basically hung out to dry, one by one.
Once The West smells weakness, they pounce on you. NO MERCY. You'll have to roll up your sleeves China and get involved (physically) in messy games. Otherwise, one by one, they'll remove your buddies, isolate you, and then they'll come after you. No hiding, just delaying the inevitable. The same applies to any country, unless you have the privilege of blue eyes, and blonde hair.