Why do these alternating beads fly!?

Snow Girl also looked at me silly, she was surprised: "You are the alternate sun and moon!"

I... Is it the man who alternates the sun and the moon?

"What exactly does this so-called alternate man mean? I couldn't help asking, "Why are these alternating beads flying around me?"

Snow Lady can't hide the excitement in her eyes. She quickly explained, "Our Snow Lady family believes that human body has the balance of Yin and Yang. Only those who achieve the balance of Yin and Yang can be considered as real calm. Only the calmest people can control the cold snow and ice.

That's...