The song Boundless Boundaries was written and composed by Xu Yi and released on July 1st, 223. Boundless Boundaries is the background music sung by the singer M2OJ and used in the documentary Boundless Boundless Boundaries. The style of this song is unique and full of power, and the lyrics express awe and praise for the vast and boundless earth. "Boundless Boundaries" is an excellent background music, which adds many highlights to this documentary.