C142 Mystic Soldiers
The Mystic Soldiers was different from normal swords and sabers. This weapon was made from special materials, it was carved with ancient runes, and it was able to imbue Profound Spirit Qi into it. When used, the attack power would increase by a lot.
As for the flying sword that people spoke of, it was also a type of Mystic Soldiers. After adding a material for Light Wind Stone