Shitsu' (also called 'hitsu' in rare cases), a large-sized musical instrument that belongs to zither group as with Soh, has 24 strings in the case of Shoso-in's property and 25 strings in the case of the ancient Chinese musical instrument.
また箏と同じツィター属の大型楽器である瑟（「しつ」、まれに「ひつ」とも読む）は正倉院の宝物が24本、中国の古代楽器では25本の弦を持つ。