The mountains and rivers are beautiful and the road is long. What's behind them?

Beautiful scenery and a long road, followed by my sister singing to my lover, followed by a series of lyrics, including "We are like lovers and soul mates", "We will never be apart", "I have been waiting for my lover all my life", "We are like butterflies", "We will never be apart" and "Sister, I am looking forward to my lover". Sing the song "Never part" from the paper wedding dress/meow sauce.