Furniture Design Rt Stool or Sidetable by Xiaokai Li Rt is a minimalist piece of furniture designed by Hangzhou designer Li Xiaokai. The design is inspired by Chinese tangram. Rt is composed of two right-angle aluminum plates of the same size, and a right-angle wooden block. The designer hopes that users may easily assemble and disassemble the present product. Through its particular design, Rt will appear both strong and simple to the eye; its structure is solid, and it will offer different visual effects when viewed from different angles.