Its Now Clear that the escalation in tensions between the two KOREAS is China's response to Tianjin

I think its a feeble response but what else can China do?
With the reports of military hardware being sent to North Korea from China, it is clear they (the Chinese) are taking the "plausible deniability" approach to antagonizing the West. Still no match for U.S.A's superior technology like the Rod of God system.