这部纪录片聚焦宝兴县硗碛乡的多声部民歌，展现了这一传统民间音乐独特的文化内涵与传承现状，同时也描绘了当地民族文化与外出到大城市谋求发展的年轻一代生活之间的反差。

This documentary focuses on the polyphonic folk songs of Yiaoji Township, Baoxing County. It presents the unique culture and inheritance of this traditional folk music, while also depicting the contrast between the local ethnic culture and the lives of the younger generation who leave their hometown to pursue development in big cities.