The Only Constant in This Life is Passing Through the Earth. This song is sung by Yu Ke Wei. Composer: Zhang Jianjunwei Lyricist: Shi Rencheng. Lyrics: Hey intention is not unexpected her back so light, hey to understand that people will come and go, the world's only constant is that people are fickle, passing through the earth love has a deadline, the sky poor see heartbreak is inevitable, thought the pain over a few times more practice.