After his self-destruction, Gu Shenwei became weak. However, this enabled him to comprehend Death Scripture swordcraft better.
This swordcraft was a bloody art. Users could only improve themselves through ceaseless killing. The more proficient they were, the greater their killing desire, and vice versa. The quintessence of "self-deconstruction" and "life-destruction" led to the same destination, which was to be conquered by the Murderous Swords, and became a part of it.
When facing one's desire, one's obedience would be one's victory. Emotion, sword and killing were all one's desire.
Initially, Gu Shenwei felt uneasy about being controlled by the Death Scripture. However, he now wanted to embrace it.