Ryuko is the Minteki (a flute in Ming) in which thin Tekimaku (cloth for a fue flute) is placed over the holes, and Chosho is a dongxiao (a Chinese bamboo flute similar to a shakuhachi) that is longer and more slender than a Shakuhachi bamboo flute.
龍笛は薄い笛幕(てきまく)を穴に張ったいわゆる明笛(みんてき)で、長簫は日本の尺八を細く長くしたような形の洞簫である。