Thanks to the hounds who confirmed that the food court across from the Hong Kong Market in Rowland Heights does go entirely dark one day of the week but is still in operation. As you enter the front of the court and turn left, new at that food court is Little Shanghai, which serves a limited Shanghai menu featuring dumplings, noodles, hot appetizers and cold dishes. Items on the menu include shepherd purse dumplings and wontons, rice dumplings and rice ball soup. Almost everything on the menu is under $8, and they sell frozen dumplings. Street address is 18458 Colima Road.