Every peoples every where invent.
BUT, Invention to be good must be needed.
The Chinese, like the Afrikan, have it so good that they don't need to invent anything. So the lack of need results no need to produce.
BTW: Spaghetti was needed so the Chinese invent that. Fireworks for celebration was need, the Chinese invented them.
The Chinese invented and perfected Bureaucracy, And my favouri9te. The execution of criminals, if there were 10 suspects, killed them all to be sure to get the guilty one...