What is his intention?

( My English)

They reported that President Trump exceptionally welcomed President of China Xi Jinping to the US.

It is good that big nations get along well with each other.

However, I just don’t understand why he has changed his policies so abruptly.

I wonder how Japan should go on.

( ChatGPT)

It was reported that President Trump gave Chinese President Xi Jinping an exceptionally warm welcome to the United States.

 I think it is a good thing when major countries get along well with each other. 

However, I just don't understand why President Trump has changed his policies so abruptly. 

I wonder what course Japan should take in this changing situation.

A few points: “President of China Xi Jinping” is more naturally “Chinese President Xi Jinping.” 

Also, “how Japan should go on” is understandable, but “what course Japan should take” sounds much more natural when discussing a country's future policy.