If you buy an iPhone from China in the US you won't have the same quality assurance, return policies, etc. as if you bought at an Apple Store in America unless you pay at least around the price you'd pay at an Apple Store in America
Discussion
Yes the iPhone from you Apple store is your Chinese option. Made in China, serviced in the US.
No, the Apple store in the US is the least Chinese option for buying an iPhone
A more Chinese option would be an Apple iPhone bought from a Chinese retailer and shipped from China
The most Chinese option would be a phone that's called an "iPhone" and shipped from China but having nothing to do with the US-headquartered Apple Inc.