Chen Feiyu manipulated true essence and sword intent together to impact the Xiantian Aperture. Perhaps it was because the *Hunyuan Sword Scripture* was too profound as an art of sword immortals.
With Chen Feiyu's true essence at the Legendary Early-stage at this moment, coupled with the sword intent in his dantian, they could only advance inch by inch along the crack of the Xiantian Aperture, unable to completely break it open in a short time.
However, time was urgent now. Once they stayed in the world within the painting for too long, Dantai Yuchen outside would definitely encounter danger!
Chapter 721