Iron Blood Essence.
A weapon could have the same structure of iron molecules and blood as a human, allowing the weapon to be compatible with the human body.
To put it in layman terms, it was similar to the kind of weapon that was kept in the body in a cultivation novel.
It was a super high-grade material, and the price was also not cheap.
Although Ye Xiao already had a storage ring and could keep the long-handled saber at any time, it was still different from that.
Not only was it high-class, it was also very convenient.
There were some places with restrictions that the spatial ring might not be able to activate, but if the weapon was in the body, it could be taken out at any time.
Moreover, with the weapon having consciousness, it was also more convenient to enhance the relationship between the owner and the weapon.
It was just that he did not know if the weapon would automatically come out.