The "Symphony Asian Mad Scientist Theorem" continues to play out. Trump engaged North Korea in talks that led to a calm without North Korea changing its DNA. Trump eventually reminded North Korea what everyone knew would be necessary to reach an agreement and North Korea stomped off.
Now, Trump comes off a marathon of wider-scope talks with China and continues to talk about talk, while the message is sent more clearly to China every day. China already knows what will be necessary to reach an agreement, its ambitions otherwise are classic Imperial-Confucian wishful thinking.
Over the weekend, the US and China exchanged insults at the International Institute for Strategic Studies in Singapore. America isn't gonna' tip-toe around China anymore! And, China will risk any and every cost and will defeat everyone who stands in the way! They sure told each other! We can't say China didn't warn us, just like China warned the world before the victorious Korean armistice and before China's great and splendid invasion of Vietnam.
Don't think for a second that Trump doesn't care about Japan. If he really didn't care about Japan—if he truly enjoyed the missiles recently launched by "Rocket Man"—he wouldn't say so on camera. Remember, everything he says is being closely watched by a large and volatile North Korean neighbor which believes that everyone believes everything published in the press.
No matter how much anyone warns China of the dangerous pinball machine game it's bouncing around inside of, they won't change because China only ever and always remains true to its Imperial-Confucian values. Those values can and will never include "capitulating to outside demands". China just won't change, you see.