>>513110079
Chinese iq is quite high, but only within a preexisting system. For millennia, the Chinese perfected the art of rice growing, which requires categorization, systemization, and bureaucracy. The community must work together to maximize food production. However, there is rarely anything new introduced into that system, and so they become really good at exploiting the system, not radically designing new ones. As a result, Chinese civilization is based around bureaucracy (think the Chinese dynasties or their modern collectivized culture), and they are really good at exploiting existing systems (eg American higher education/medical school). Compare this with European intelligence, which, being forged in winters without food and with wild beasts, preferences those able to accommodate any eventuality. Hence, the European penchant for creativity and the Asian excellence in bureaucracy.
You also have to take into consideration the writing system. An alphabet is the best form of language for creativity; logograms the worst. An alphabet allows you to create new words by adding prefixes, inflecting old forms, and compounding words. However, it is also very accessible to outsiders. Logographic writing systems prevent easy access by outsiders (due to the vast quantity that must be memorized), but offer little room for innovation. This is the expected hallmark of a bureaucratic race. Compare, for reference, Egyptian hieroglyphs and Sumerian cuneiform. Pictograms are the writing instruments of a slave race. Cuneiform (syllabograms) allows the scribe to strain towards improvement.