The Blood Gold Crystal in a normal blade can absorb the owner's emotions, even accumulating some power. For example, when a Sixth Grade Murderous Demon King wields his Blood Gold Crystal blade, he kills countless people.
Then... if this blade ends up in the Social World, it would become a Demon Blade.
The person who obtains this blade can significantly increase in strength, but will also be influenced by the blade's Evil Qi, leading to Firewalking and even madness.
However, the slightly better quality Blood Gold Crystal only truly shines in the hands of a "Weapon Forger."
Because a "Weapon Forger" can forge a blade with a "Sword Spirit."
As for how to forge it, or what kind of spirit is the "Sword Spirit," ordinary disciples simply do not know.
After all, for them, it's a mysterious power that deserves reverence.
But this information is enough for Li Yuan.
He had at least confirmed one point:
The "Puppet Master" can make Soul Iron Crystal grow flesh;
