I had a coworker who lived in Shanghai. His son spoke Cantonese (from the mom), English (dad), and Mandarin (from school).
I had a coworker who lived in Shanghai. His son spoke Cantonese (from the mom), English (dad), and Mandarin (from school).
But ironically not Shanghaiese? (An Wu dialect, if I remember right).
The kid was 6 went I met him, I don't think he had gotten out enough yet to pick up a local "unofficial" language.