A lot of the parts in every car, produced anywhere in the world, are shared with other models from other manufacturers. That's perfectly normal. Like e.g. "german", "french" or "american" cars, many "chinese" cars are made up mostly of german, french etc. parts. Well, german-engineered, french-engineered etc., beccause the parts are often produced relatively closely to the manufacturer's assembly plant. (Which is why BMW and it's american suppliers are biggest exporter of the fruits of automotive labor in the US.)

Chinese manufacturers are just more blatant in their copying of western designs. Western manufacturers tend to be way subtle about taking and reworking design cues. Though undeniably everyone will assimilate any popular design into their own design language.