If you want to talk about this then
worlddata.info/iq-by-country.php
No offense and I do think this kind of data is close to joke. So take it like a joke then.
And btw as a CNese I dont feel too happy that they pull hk and tw out as country. anyway...
when people all over the world are jealous of our country, their dominator and high rank officials are busy transferring their family members and assets to USA.
i just sit there and watch their barks.