GenZedong

Maybe because by having a headstart of 2 centuries in industrialization and modernization along with pillaging and imperializing most of the globe for the last century , the US has accumulated a ton of riches and a global cultural hegemony that makes citizens even in a rapidly developing nation like China want to go there , especially for richer western-phile ones for whom America might provide a better living. And of course as i said western cultural hegemony and global media dominance make it seem like the American Dream is still a thing and that the grass is greener at the other side. But still your point ,even without this nuance, is losing steam. Chinese migration numbers to the US has been rapidly falling ,as are Chinese enlistments to US collages and schools, with the number of Chinese people repatriating multiplying over the years and the common feeling being "US kinda sucks after all"