assemby

http://memory-of-child-year.blogspot.hk/search/label/%E5%90%B3%E7%8D%85%E7%9A%87%E6%96%87%E9%9B%86-%E9%97%9C%E6%96%BC%E9%9B%BB%E8%A6%96%E7%AF%80%E7%9B%AE%E7%9A%84%E6%96%87%E7%AB%A0