Mid-Autumn Festival is a traditional festival of the Chinese nation, and all ethnic groups attach great importance to it. On that day, there is the custom of eating moon cakes and looking for the legendary Chang 'e. Moon cakes represent reunion, but whenever we eat moon cakes, have we ever thought about wandering in a foreign land? They are in the Mid-Autumn Festival, sitting alone by the window, holding moon cakes in their hands, quietly looking up at the round moon. How lonely they are and how much they want to spend the Mid-Autumn Festival with their relatives.