The biggest problem is that money can get easily into China, but not so easily out of it.
That will have complications in the future, but that's the next generations issue, not the person making the decision today that wants a nice bonus.
So it's in fact hard to get money out of china.
[1] https://www.statista.com/statistics/263632/trade-balance-of-...
[2] https://www.statista.com/statistics/220041/total-value-of-us...
If your think that surplus is a lot, then 5 times that is definitely not "they don't import much"
Our current president and almost half of the country explicitly doesn't think so.