His original fourth martial spirit actually has a name but the system couldn't identify this Martial Spirit. Except for its hand, every body part is invisible but this is not a stealth Martial Spirit. He was confused, didn't know what to call it. So system named it unknown martial spirit. And first ability unlocked by the martial spirit is World Suppressing Hands.
This ability allows him to suppress anything in this world. If his opponent is attacking, then using these hands, he can suppress the power of the attack. If opponent's martial spirit is lower, then he can completely suppress any kind of attack.
Just thinking of this brings chills in his bone, Fei never thought there would be such a terrific ability. Even Five Elements Dragon Seal can only seal the elemental attacks. You know this ability belongs to Nine Stars Divine Rank Martial Spirit.
