Theoretically, the oral spreading could never ceases through ages. However, we cannot investigate the means due to lack of materials before the Song and the Yuan Dynasties.
口头传播从理论上而言从来就不会停止，但因缺乏材料，以致宋元之前无从考稽。
参考来源 - 中国口头文化遗产——董永遇仙传说研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The passing form of the oral spreading and the teaching in heart without rules has accumulated its sense of religious secret and produced more inflexion, special melody forms which are worthy of …
口传心授不存谱例的流传形式、增加宗教仪式神秘感的变化音、特殊的调式色彩都是值得研究和思考的。
Two ways of its spreading are mainstream and oral.
两种传播方式，即主流方式和口头方式。
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