Do you purchase produce grown in China?
I've been avoiding it, because when I think of China I think of pollution and poor sanitation, but there are a lot of herbs and vegetables that just aren't sold in regular grocery stores, meaning Chinatown is the only option.
What do?
Not anymore.
>canned mushrooms
>asian pears
>canned water chestnuts
I do miss the asian pears though
Generally pollution is in the cities, and farms are generally not in cities, if that makes you feel better. And things in Chinatown aren't always from China (especially vegetables that would not survive the journey by boat). You should probably not worry about this unless your standards are very high, i.e. you buy organic veg all of the time.