C247 The Oath Is Not yet Ready!

Sang Huaiyu perked his ears and listened, immediately revealing a look of fear: "It didn't come from our military camp, it came from the north."

That's right, this tune came from the direction of Ningnan Army.

At first, it was as if only one person was playing, but then, this tune also came from other parts of the Nanyong Pass. It was as if countless people had started to play together