C243 Faced Head on Fragments of the Creation God Equipment

The materials used to create the storage ring were called Void Crystals. They were a type of gem that could only be formed after thousands of years in chaotic space and time.

As the Void Crystal was used to communicate with space, not to mention mana and true essence, even the violent flow of time and space couldn't be destroyed. Many immortal equipment had Void Crystals as their material