This was because, according to the records and what Helinta had said, when one broke through to the Martial Arts Family realm, the more abundant their accumulated Qi and Blood, the more powerful the Essence Element Divine Treasure they could open.
So, Hu Qi had been continuously accumulating his.
As for the Seven Evils Saber, Hu Qi had not upgraded it; it remained at the Third Layer.
It wasn't that he didn't want to. Rather, the Fourth Layer of the Seven Evils Saber had a prerequisite: it could only be used after breaking through to the Martial Arts Family realm.
Even if Hu Qi could use the Crimson to upgrade it, it would be useless to him.
To put it bluntly, his body's "hardware" couldn't handle it.
