《资治通鉴·梁纪·梁纪三》
北魏公孙崇造乐尺，以十二黍为一寸，刘芳说他定的不对，改成以十黍为一寸。
魏公孙崇造乐尺，以十二黍为寸；刘芳非之，更以十黍为寸。
Gongsun Chong of Northern Wei made a scale for music, with 12 shu as an inch, but Liu Fang said that his decision was incorrect and changed it to 10 shu as an inch.