Gravis ran to the north with his full speed. He knew the power of someone at the Spirit Forming Realm very well. If a Spirit Forming Realm expert only had their Energy and their physical strength to fight, then Gravis might have a chance of killing the opponent, but those things were not the main advantage that someone in the Spirit Forming Realm had over people below them.
The most significant advantage was the Spirit in itself. As an Energy Gathering Realm cultivator, Gravis could only use his element in a one-dimensional way. He could use his lightning to move faster and to attack the enemy. Compared to that, someone at the Spirit Forming Realm could create figures, patterns, objects, and other things with their element.
Back then, that one disciple of the Lightning Guild had created lightning nets in front of Gravis and had controlled those remotely. The only reason why Gravis managed to survive against that person was that they were multiple kilometers apart.