Would prefer someone more familiar with China handle (I recognize we may not have any such person "on staff").
We don't AFAICS - it's one of many reasons why the system isn't ready for review, even though it's in preview (note that Michael!). I drafted routes to the best of my ability, but I was reliant on finding a latin-alphabet map service for word-based name labels (thankfully most were exit numbers or numbered routes).
That, and the snapshot of routes is about 3 winters out of date, so there's going to be about 10,000km not included...
I've not been keeping Japan up-to-date (there's not much to add there though - more like 100km), and the Philippines had so much conflicting information that I just picked one set and stuck with it - it looks like I will have to revisit that system and redo it now more information is available.
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zaf's fine for review. Though it will probably be quite a bit of work as I didn't check to see whether road numbers are signed (often just glad to have a point I could label!), and various routes are very long. It was quite a tedious system to create in places.