C992 The Wonderful World in the Eyes of Formation Without Runes

"Is this the ability of the Dual Concept?" Tang Yu asked curiously.

Zhen Wuwen shook his head and said, "No. Dual Concept is a Dual Concept, but it doesn't mean that it can be used even when one knows how to use Dual Concept. This was mainly because of the power of the formation combined with the Dual Concept. As long as the Spiritual Strength was strong enough, this attack would be useless