"Under Heaven, how do you tell the difference between Yin and Yang teleportation stones?"

"The red one is Yang, and the white one is Yin."

"How did you know?"

"You can feel it with your own hands."

Yue Linglong touched it with her hand. Sure enough, the red "teleportation stones" were warm. It felt like sunlight was shining on a person's body, while the white "teleportation stones" felt a little cold. However, Yue Linglong still thought ...