《战国策·楚四·汗明见春申君》
千里马于是低头而喷气，仰头而长鸣，叫声直冲云霄，真像从金石乐器上发出的声音，为什么这样？
骥于是俛而喷，仰而鸣，声达于天，若出金石声者，何也?
The千里马 then lowered its head and snorted, lifted its head and let out a long neigh, its call reaching straight up to the heavens, it was like the sound of music coming from golden and stone instruments. Why was this?