When aurora emerges， there is nature sound that play the music and the formation of northern lights.
We visit the memory park of siliubas, who wrote the Song of Finland. He played the music that is human sound.
His memory park is designed like a wave of metals. The wind makes the earth sound.
Everything becomes so natural that is led by nature sound.
Nature sound is what Zhuang zi said Tian lai, and waht Lao zi said Wu Wei.
