According to Netease Cloud Music, Sky in the Sky is a song composed and sung by Sun Zhongze. Some lyrics are like this: night falls, the moonlight is noisy, fireflies chase the moon, light up the stars, and the stars will grow old. Which one is you? Can the call from the top of the mountain go through the clouds? Can there be a cigarette in Lengyun Mountain? See if the traffic on the earth is hidden in the lights.