《晋书·志·第六章》
林钟之笛，正声应合林钟律，下征应合太蔟律，长三尺七寸九分七厘挂零。
林钟之笛，正声应林钟，下徵应太蔟，长三尺七寸九分七厘有奇。
The Linzhong flute, whose main notes correspond with the Linzhong mode, and whose lower notes correspond with the Taicu mode, is 115.33 cm long.