What does this mean Chinese restaurants started as a service for the bachelor communities of Chinese immigrants in isolated ranches, logging

What does this mean "

Chinese restaurants started as a service for the bachelor communities of Chinese immigrants in isolated ranches, logging camps, mining towns, and other areas where Chinese men and women were willing to cook. When the eating places that the Chinese had set up for themselves soon attracted a number of outsiders, the Chinese realized that restaurants were profitable business enterprises well suited to their temperament"