Grrrreat, threaten the crazy man in charge of a huge military.   Such displays of power have never deterred the north koreans from pursuing their objectives and only serves to escalate the situation.   Much of what the chinese do is self-serving, but they are right to advocate toning down the rhetoric and easing tensions.   With kim jong un, there is little to gain by flexing military might, as he sees such acts as justification for developing a nuclear deterrence.