Hendrik, you need to cool down a bit, although what challenge is saying isn't correct on both counts. There is a standard of decorum that must be observed by all members.
Challenge, the Chinese aviation industry did develop the Y-10 liner, then the Y-7, and finally the Y-9 and ARJ-21. But developing a two to four engined cargo plane does not appear to be such a priority that they would rather expedite it by using available designs. After all a mule is a mule, does not really matter where it comes from. China appears to want to concentrate development efforts on more visible and "sexier" projects. As for the Russians, there is no lack of innovation coming from them. There is no proof that by being Communist, they were less innovative.