Hi, Ludsky! This is a very cool WIP. Your friend is doing a good job.
I think that you are aware about the other track in China [youtube]https://www.youtube.com/watch?v=JQME-MxLDjw[/youtube]. The track that already exists is "old" and placed most (probably) over the Great Wall. For this reason, I would avoid some reference to the great wall and we will have two tracks in China, but showing different cultural elements.
IMO, the main improvement he can do is making more realistic textures with dust, dirt and stains replacing the current solid colors (I know this is for a while) that look like if they were painted one hour ago. Here you see what I have in mind:
https://www.youtube.com/watch?v=R8eWAH13IakIf was me, I would include a beautiful Chinese garden somewhere and a lot of lanterns. Check these images:
https://www.google.com.br/search?q=chin ... 00&bih=787https://www.youtube.com/watch?v=Li-Kszh4ceoIf he likes the idea of a track at night, maybe some lanterns flying:
https://www.youtube.com/watch?v=leTdaF3bsB4I'm Brazilian, then, I'm not an expert in China (I know that some people in STK have Chinese relatives who could advise better), but we have a large Asian population in Brazil. Actually, we have the largest Japanese population in the World except for Japan, of course. In São Paulo, we have a district called "Liberdade", which is mostly occupied by stores and restaurants with Asian themes. If he wanna put a lot of references in only one place, you can see some of them.
https://www.youtube.com/watch?v=m6ty1JQ2ZPkhttps://www.youtube.com/watch?v=CdZxDAgJCOQhttps://www.youtube.com/watch?v=YBKUw7UW__U