This Void Rune has indeed captured Jiang Chen's great enthusiasm and interest.
In the ancient texts about the Void Rune, Old Man Dan Fu recorded many methods of crafting Void Runes, and some especially noteworthy techniques for study.
Each type of Void Rune has different engraving techniques under specific conditions. These techniques differ somewhat from carving formations and coagulating hand seals.
In short, it is a technique that combines the engraving of formations and the condensation of hand seals. Through various hand sign techniques and formation carvings, Void Runes are crafted to unleash attacks similar to formations.
Perhaps, compared to some large formations, the power of Void Runes is somewhat weaker. However, the advantages of Void Runes are quite evident.
They offer surprise, can be mastered quickly in a short time, and can be adapted to create different Void Runes according to the environment.