青旗沽酒
[qīng qí gū jiŭ]
Loosely translated, it means 'Green Flag and Purchase Wine', likely derived from ancient Chinese customs and scenery described in classical literature. '青旗' could be referencing the traditional green banners outside shops selling alcohol, while 沽酒 ('gujiu') means to buy wine, thus invoking an image of a tranquil tavern setting.