C139 Lang Gong Yuan

Astonishingly, Lang gongyuan stood right in front of Yun Jiutang and Gu Xueluo, much to their astonishment. However, Gu Xueluo was still able to recognize that star. On the surface, it appeared to be a high-quality jade flute, but in reality, it was a supreme assassination weapon.

The more beautiful and melodious the sound of the flute, the more powerful the hidden weapons would be