Containing North Korea is the only way forward. China knows perfectly well how hard it is to do so, but the catastrophic consequences that would follow if we choose to ignore it will impact not only the region, but the entire world - forever. We do not have a good grasp on the location of many of the arms facilities that are hidden from plain sight, so if we were to take military action, the only option would be a nuclear strike to completely neutralize the threat. Such an action would of course have catastrophic consequences, and is why it should only be reserved for self defence against a nuclear power, based on MAD.
Now, the rhetoric is strong from all sides, but all actors are rational and aware of the grotesque consequences that nuclear fallout would entail. Trump is reckless, but even he should know that a nuclear world war would be devestating. What all sides are doing is that they are projecting strength and posture. The rhetorical dynamics at play are succinct, but the actors that project them carry great responsibility, not only to their own people, but to the entire world.
Case in point, nothing's going to happen if no one actually does anything irrational beyond the posturing. The uncertain variable however is Donald Trump. If North Korea pushes the right buttons and continues to humiliate him on the world stage, I don't want to think about what Trump is actually capable of doing. He knows that he's setting a precedent, and partners and adversaries alike are all watching and analyzing how that very question will unfold.