Chinese grocery shopping in Vancouver BC
 

I made a plaintive request for help looking for a product recently and
now find I will be in Vancouver for a day or so at the end of this
month. Can anyone local recommend a particularly good store or stores
where I'd have a good chance of finding mei gan tsai (gan cai sun)?
Supposedly best chance is in stores specializing in Shanghai or
Hangzhou foods. I spent hours and hours walking in Oakland and never
found it and I doubt I'll have that kind of time in Vancouver (it's a
business trip).