《明史·志·卷三十七》
近代只用黄钟一均，而不全部具备十六钟，古人立乐的方法已经失去。
近世止用黄钟一均，而不遍具十六钟，古人立乐之方已失。
In recent times, we have only used the single tone of Huangzhong, not the complete set of sixteen, and so the ancients' method of establishing music has been lost.