I think that was kind of a joke (I hope)...  
Also, that assumption (that there are many hackers in China) is based on the FACT that China has been historically lackluster at enforcing anti piracy and software copyright laws. So, in the western world there's often this misconception, but is based on SOME degree of truth.
Of course one should never judge an individual person based on cliches, like that all German people eat and like sauerkraut, or that all Italian people play the mandolin and sing, or all Texans go around shooting riding on a horse.