On 4/8/2021 at 7:12 PM, gfweb said:@liuzhou your bok choy isn't our bok choy
I know, but I use the names and definitions used in China, not America. Seems reasonable.
There are many different types of 白菜 bok choy / pak choi. It just means 'white vegetable' or 'cabbage'. 'Bok choy' is Cantonese; in Mandarin it's 白菜 (bái cài). For what I hope are obvious reasons, I'm using Mandarin.
In 2016, a purple variety of napa cabbage was bred in Korea and introduced to China as 紫罗兰白菜 (zǐ luó lán bái cài) - literally 'violet cabbage'. That's what I had.