Only first generation Chinese immigrants can be considered overseas Chinese, those born here cannot possibly be considered overseas Chinese since they are NATIVE to SG.
As said earlier, fully integrating a family line takes generations.
At best it takes 3-4 generations for the bond to form. Why, some may ask?
1st gen were foreigners turn citizens.
2nd gen may or may not be born and raised here.
Only 3rd or 4th gen are the ones that are born and raised by parents that were born and raised here.
Because 1st gen immigrants were mobile enough to shift to SG, they could always afford to become mobile and leave again, not including the ability to link up with kins and friends back from their original country or elsewhere around the world.
2nd gen that were not born or raised here ish rikely with the same mindset, though they might not be able to make independent decision until later.
2nd gen that were born and raised here, despite being "more" native, ish ultimately deeply influenced by their parents, and could be forced/indoctrinated to move or leave or even work against the nation by their parents. I hab a 2nd gen relatives rike that, grew up here but left SG and never intended to come back anymore, because one of the 1st gen new citizen parent ish a total s*ker for green pasture of foreign lands and hab planned for that since the start.

It ish the chewren(3rd/4th) to the generation(2nd/3rd) that were born and raised here, with which ALSO make a conscious decision to want to take root here that will be the ones that can fully integrate into the nation.
And that's the 3rd/4th gen.
