https://www.google.com/search?q=china+babies+sleep+on+their+...
https://www.washingtonpost.com/archive/politics/1993/06/30/c...
The WaPo article is very illuminating re: how Chinese babies were raised. As it was published almost 30 years ago, those babies are now established Chinese adults. Makes you wonder how much they're shaped by how they were reared.