Chinese wheel bearings are pretty good wheel bearings.
Most wheel bearings now are made in China and are of pretty high quality.
Some Chinese wheel bearings may be higher quality than others depending on the brand of wheel bearings.
China doesn't always make poor quality items including auto parts and wheel bearings.
Many good quality auto parts and things come out of China with no issues.
I have Chinese wheel bearings hub assemblies on my Jeep Grand Cherokee and it has 100,000 miles on them with no issues as of now.
I also have a trailer with Chinese wheel bearings and the Chinese trailer wheel bearings have 50,000 miles on them so far with no issues.
As long as the Chinese wheel bearings are maintained and greased if they need to be then they should be good for thousands of miles.