single drop. Therefore, after watching Lao Hei's demonstration, he quickly grasped the key points.Lao Hei kept staring at Jiang Yun's expression changes. Seeing the realization on Jiang Yun's face now...best to see the other person's face clearly!Finally, when all the nine-colored light spots disappeared, in his eyes, he could finally faintly see a face.That was a middle-aged man's face!"Clang clang...