Longtang -

"A longtang is a lane in Shanghai and, by extension, a community centred on a lane or several interconnected lanes. It is sometimes called lilong (里弄); the latter name incorporates the -li suffix often used in the name of residential developments in the late 19th and early 20th centuries. The Shanghai longdang is loosely equivalent to the hutong of Beijing. As with the term hutong, the Shanghai longdang can either refers to the lanes that the houses face onto, or a group of houses connected by the lane. - Wikipedia"