This track has many issues, but at the same time it has potential to be a very great track.
The main problem is that it's extremely sloppy in parts where this sloppiness isn't really necessary at all. Especially now that hard-breaking isn't part of the game anymore.
In many parts it's also easy to fall down.
Let's start from the beginning.
The brick tower obstructs the flow of the track.

Here you could add some guardrails so the karts don't fo out of the track so easily. That isn't fun.




In that last picture, it's easy to hit the entrance to the Great Wall.
If you someday want to implement the Reverse mode in this track, I suggest you to cover this part somehow so that your players don't drive to the wrong side.

This part could be softened (or, directly, flattened) and have a guardrail.

Overall, a bit of lighting could improve the visuals in this track.
Just my $0,02.

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