《吕氏春秋·纪·仲冬纪》
由此看来，师旷想要使钟声更为和谐，是考虑到后代有精通音律的人啊！
是师旷欲善调钟，以为后世之知音者也。
From this we can see that Shi Kuang wanted to make the sound of the bell harmonious, he was considering whether there would be someone good in music in later generations!