The story of Wugou Twin Swords

Muzha took Puxian Zhenren as his master on Mount Jiugong and practised with the Wugou twin swords. When Jiang Ziya raised his army, Muzha came down with them and joined his brother Jinzha and his brother Nezha.

When Lü Yue broke into Western Qi, Muzha met him with the twin swords and, while others had him surrounded, cut off one of his arms. On the eastern campaign at Youhun Pass he worked with Jinzha from within and without and opened the gate with those swords.