We'd better wish the N.Korea won't become next Middle-East near our border, or N.Korea just wanna change a new master like the U.S. Many Chinese ppl still believed the N.Korea-China r ally after Korea War ... that's not the truth, N.Korea owning Nuke is against China interests in Korean Peninsula ... current PEACE fit for current BeiJing's diplomatic policy but any action like the Nuke breaking the military balance in Korean Peninsula. The BeiJing dislike anyone to set FIRE near our border especiallly in Korean Peninsula ... now the N.Korea doing the bad.
Today is not the 1950, today China won't support N.Korea, won't support a nuclear armed N.Korea. Simply speaking, our interests is different between 2016 and 1950 ... just see which side China doing more trades ? A war or a potential war, will break the way of China making money ... that's the most threat to current China.