According to StreetsOfWashington on Pinterest: "Owned by John Hing Lau, the Kwangchow was one of Chinatown's more obscure eateries. It featured "tea pastries" (Dim Sum) in the days when Americans didn't know what DIm Sum was. By the 1970s it had moved from G Street to 809 H Street NW."

Washington, D.C.'s Chinatown is a small, historic area of Downtown Washington, D.C. along H and I Streets between 5th and 8th Streets, Northwest. The area was once home to thousands of Chinese immigrants, but fewer than 300 remained in 2017.
The current neighborhood was the second in Washington to be called “Chinatown” since 1931. Originally, the first Chinatown was built in the Federal Triangle on the south side of Pennsylvania Avenue some time after 1851, but was moved to the H Street area when a new federal building was built there.