Good, helpful, informative posts.
I don’t think China will surrender all it’s built up in N Korea for that but it could happen. At least Trump is giving them (forcing them to make) a choice.
So it looks like they began intitating this ‘then’...and now making it an ‘official’ a announcement. China is all about saving face pretty much above anything else..an 'Offical" announcement carries a great deal of weight for Chinese I understand.....