C758 Secret Method

According to the Sword Spirit, the existence of this space required a huge amount of sword body's energy. Furthermore, the level of energy that was required was extremely high. It required at least heavenly and earthly treasures s of the heavenly and earthly treasures level, or perhaps more accurately, high-grade Yuan Stone's energy.

The corner of Ye Xiao's mouth twitched. Xiao Doudou