As always, you can copy and paste the title on Google and bypass the paywall or use the "web" link under the title.

For those who won't bother, this is the TLDR version:

"Chinatown’s 80-plus produce markets are cheap because they are connected to a web of small farms and wholesalers that operate independently of the network supplying most mainstream supermarkets ... Because the wholesalers are in Chinatown, they can deliver fresh produce several times a day, eliminating the need for retailers to maintain storage space or refrigeration"