C1119 Nine-tone wind profound melody

"Law of the Wind! I can't believe that kid is so mysterious. He has a lot of cards up his sleeves. "

The old lady from the Zither Sky Sect muttered to himself for a while, then slowly spoke with a hoarse voice: "Although the sound waves from the Zither Sky Sect are invisible, they are not untraceable, because the sound waves need to travel through the air to be transmitted, and the wind