Besides Manhattan being essentially the sole port of entry for Fujianese migrants, the main mode of transport for Fujianese Americans is an intricate network of Chinese operated bus companies that regularly run between Manhattan and just about any major city east of the Mississippi River. As such Fujianese Americans operate the large majority of Chinese restaurants (a good chunk of which are Chinese buffet restaurants) in the eastern United States. And the further west you go, the fewer Fujianese residents you find, so when you get to California the number of Fujianese is very small, making the demand for Fujianese food likewise quite small.
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