What should China do?
Not sure.
The important thing is the play along I feel.
This war in Europe, does not put China in a weaker position, unlike others.
The RMB went down, but not by very much. Perhaps that is just short term relief, to get things in order, get to be more competitive, as we know 5G should be an innovative and efficiency boom for the Chinese economy. Eventually the RMB will probably rise.
In short, the best policy would appear to be for China to keep on playing, but with a view for the long term.
Look at that situation. Americans got a lot of short term gain. Chinese still playing for the long term.
The currency game, may not last. But the Americans got the advantage absolutely in the short term. In the long term, China is still there, and still getting stronger.
Generally, the short term play, will tend to lose out to the long term play. Look at what happened to President Trump's trade war and tech war. After the initial flurry of hostility, the picture becomes clearer.
The trade numbers keep going up for China. The tech profits keep going up, and Chinese tech keeps on expanding.
Huawei reported lower profits. They also reported they spent more money on R&D. Usually, the profits is paid out in dividends or re-invested as R&D. The Western media boast that Huawei profit is down (when it was invested into R&D, something that they wish not to talk about).
So that seems to be where we are at. The Americans made a short term play. Things are too much influx, it could all change still.
In response to that, the China stick to and make more long term plays to counter that. Seems that the long term moves, solidify the present and hold great promise for the future.
See, the Chinese are smart and devious bastards too.