China's forex

This is really shocking:

http://en.people.cn/n3/2017/0708/c90000-9238982.html

What does this mean? It means that the top hegemon cannot pay off this debt-in-real-terms.

The top hegemon can print out US$3+ trln to give to the Chinese for what it owes. But it already has US$3+ trln. So this can never fly. 

So how can the top hegemon redeem this debt in-real-terms that will satisfy the debtor.

And this Forex increase is in the face of apparent difficulties re debt-in-China. This what we are told in the Western media. 

So the question is this:

How can you be having difficulties with debt

and yet increase in your Forex?

Anyone with a truly good enlightening answer?