Accessories: Sui, non-slip mat, towel, tuner The crown angle, Yueshan, and dragon gums of Guqin are ebony or ebony; Qin Zhen and swallow feet are all ebony or ebony: Nayin is an old Chinese fir tree; The panel of the piano is Ming and Qing fir. The bottom plate is catalpa wood, The gray tire is pure lacquer antler cream, The finish is pure raw lacquer, The sound is deep and rhyme, the aftertaste is long, and the overtone is clear