Bok choy, celery, lettuces, leeks, and many cabbages grow right at ground level. Any wind or rain could blow dust, dirt, sand, or even animal fecal matter in between the leaves/stalks. So, you need to wash them.
This goes for all vegetables - the farmer does not seal the field in a plastic bag, so there can be 'foreign objects'.
Wai Choy's birth name is Wai Luon Choy.
Wai Choy is 6'.
Bok choy is a vegetable; it's a type of cabbage.
Wayson Choy was born in 1939.
CHOY-FM was created in 2001.
CHOY-TV was created in 197#.
Tony Choy was born in 1970.
Herbert Choy died in 2004.
Herbert Choy was born in 1916.
La Choy was created in 1922.
Elizabeth Choy was born in Sabah
Yes they can eat choy sum.