I think generally, just generally, vegetables and fruits sold at such places
are comparatively safer.
The link is to my blog - an entry about fake food!
"Such places" in many cities give the impression of being farmers' markets with the honest, hard working peasants selling their own produce. Utter nonsense. The vendors are not farmers. They buy the produce from middle men and spend all day sitting there selling it. Real farmers' markets are over by 11am or noon - they have to get back to pluck the pigs and swill out the chickens or whatever it is that peasants do.
I'm not saying that there is anything wrong with (most of) the food, and it is often fresher in appearance than that sold in the supermarkets, but there are no guarantees there either.
Liuzhou, now thinking about it, I find it a bit ridiculous. As you said it’s an entry about fake food.
The reason was that, I read many of your articles, including the one about fake food, and I liked them, so I saved your blog to my favourites. When I was about to look for a picture of such places, your blog readily came to my mind. Hence the episode.
Of course, there’s no guarantee that food in such places are all good, however, peasants do come to such places often to trade their produce for money. At least this is the case in the bazaar in our town.
Also note that I used "generally" and "comparatively".