Actions do speak louder than words. Some of us keep a sharp memory of that Chinese shipment of 20 tons of tributyl phosphate to North Korea.
As to the threat of 20 million starving NK refugees, they'll do everything possible, moral or otherwise, to keep them on the wrong side of the Yalu and make it our problem.
How many tons of food and fuel did we send them? We, the United States, kept their regime afloat when it was on the verge of collapse. When a North Korean submarine grounded itself on the South Korean coast, while dropping off a special operations team, we found that the food they had on board was from U.S. aid donations. Still in the same bags.
We're just as guilty as anyone for fueling the DPRK's war machine.
Actions do speak louder than words. "I'm scared of instability in North Korea" translates just as well into English as it does Chinese.