To avoid the terracotta curtain walls from being too stiff-looking, the designers choose LOPO wood-grain terracotta tile to achieve the effect of a fairy-like forest hut. Furthermore, the designers design light-red and sandy-yellow tiles both in four different widths: 150mm, 250mm, 350mm and 400mm. Those panels of different colors and widths are randomly arranged to create very natural and rick wood-grain patterns on the surface of the building’s elevation, therefore making the building lively.