Wang Laihua measures the diameter of a moon cake mold in north China's Tianjin Municipality, Sept. 19, 2010. Wang Laihua has collected nearly one thousand pieces of moon cake molds since 1996, which vary in sizes and patterns, witnessing the development of moon cake molds in the past years.

Wang Laihua shows his collections of moon cake molds in north China's Tianjin Municipality, Sept. 19, 2010. Wang Laihua has collected nearly one thousand pieces of moon cake molds since 1996, which vary in sizes and patterns, witnessing the development of moon cake molds in the past years.