世间何物催人老,半是鸡声半马蹄
形容时光飞逝,人生易老,鸡鸣和马蹄声象征着时间的流逝
By nature, all things are common.
体现了天下霸唱对阴阳五行哲学的理解。
Dont keep making the same mistakes; try to make new mistakes.