The brightest nights of the year are around the 15th day of the 8th lunar month with the moon shining in the dark blue and clear sky. This poetic period has been attractive since ancient time. First we see a quarter moon. Then it becomes fuller night after night until it changes into a round shining circle. All people are longing for a family reunion at the Mid-autumn Festival while looking up at the full moon and eating moon cakes. Or separated family members or friends fix their eyes on the moon giving good wishes to each other. As a result, many appealing poems and articles concerned with the theme have been passed down through ages.