Tonight the skies of Qiqihar are lit by a full moon, one day after the annual Mid-Autumn Festival. You can read more about this holiday at http://www.chinahighlights.com/travelguide/festivals/mid-autumn-festival.htm.
Moon Cakes are traditionally eaten during the festival. As you can see, they aren't what we would call a cake in the West, rather more like a pastry with various fillings which are most often sweet.