I'm not Chinese and not a fan of the PRC, but you can't honestly believe all research from China is stolen. Assuming proper nutrition and exposure to education, there are intelligent and innovative people
everywhere. Probabilistically speaking, with those assumptions, the larger the population, the more of that innovative potential they're likely to have.
Also, it's efficient to steal ideas. I assure you, given the opportunity, businesses in the US frequently steal ideas/IP as well, they're just more careful about it because there's more consequences. Why do you think so many IP lawsuits exist.
Furthermore, stealing or copying a successful process is in human nature for survival, heck, it's part of the foundations of evolution. Most people are only concerned when it's their ideas being stolen but not when they "borrow" others'.