105-107 is probably a little high, but the real number is likely above 100. If mainland China is fudging the numbers, then Macau & Hong Kong are as well. Their PISA scores are all pretty close.[1]
PISA scores are controversial to use as a comparison between countries. And yes China, Macau, and Hong Kong are likely using some creative strategies to boost their scores.
"This year, Chinese administrators chose their students from a group of cities and regions aptly named B-S-J-G, after Beijing, a province-level municipality, Jiangsu, a province on the eastern coast of the country, Guangdong, a southern coastal province, and Shanghai, a province-level municipality. Previously, Chinese authorities had chosen Shanghai as mainland China’s sole representative, whose students finished at the top of all three subject areas in both the previous two PISA studies in 2012 and 2009.
Now, if all countries were to take this approach, we would see London selected to be the sole representative of Britain, or Boston and its suburbs representing the U.S. This year, in fact, saw a separate score calculated for Massachusetts, which if taken as the nation’s results, would grab the top spot in reading with eight other nations, 2nd place in science with ten other nations, and 12th in math.
If we dig deeper into the sampling, we come across another potential problem with the PISA testing: that the sampling done on mainland China (Beijing, Jiangsu, Guangdong and Shanghai) and other cities was not taken from a wide variety of schools. Rather, the very best schools were chosen and the very best students were cherry-picked from those schools."
I think it's proven that South East Asians have highest IQ second to only Askenazi Jews.
I read various paper mentioning that. South East Asia was never poor even if you go back to historical accounts of travelers from Italy or Arab world, you'll never find poor and south asians cities mentioned in the same line.
Nonetheless all counties there were dirt poor at some point in the last hundred years. North Korea still is.
IQ is largely a measure of education, which itself is largely related to how developed your country is. Large groups of relatively uneducated rural dwellers will drag the average down.
It's well known Asians are smarter, whether for cultural or genetic reasons, but the devil is in the details. If you look at average populations I would expect the inverse for counties like China that only developed recently.
