The Kalong speaker is in the shape of a flat trapezoid, like a half-dulcimer, the frame is made of mulberry and walnut, and the top and bottom are made of pine. A circular sound hole is opened in the middle of the panel and a flower-shaped sound window is embedded, and there is a mountain pass on the right side. The left side of the piano is set with pegs, and the right side is set with t...