... SELETFUCTIONChildren,Younger-enhancehands ability,intelligence,beautify the soul A.Enhance children/younger hands ability.B.Cultivate childen/ ... mood.B.Well-designed by yourself,make a “heart” yourfriend a surprise, “build” a beautiful world of couples heart.Elderly- ... Break through the traditional jig-saw toyideas.Achieve plane,three-dimensional and curved assembly.E.Simple structure,assemble more ...