However, ballads were what people improvised out of daily life, and due to lack of means to record and preserve them in ancient times, they quickly disappeared without leaving much of a trace.

• 不过歌谣本是人们在生活中随兴而发的东西，上古时代也没有保存和记载它们的手段，因之也就很快湮灭，不留痕迹。