Chen Fei sensed the situation of the Qianyuan Sword, pondered for a moment, and continued to absorb the spiritual essence from the middle-grade spiritual sword. Chen Fei intended to elevate the Qianyuan Sword to the level of a middle-grade spiritual sword.
A middle-grade spiritual sword, without considering other characteristics, could increase one's cultivation by approximately five additional acupoints. Not to mention the other enhancements that a middle-grade spiritual sword could provide to one's cultivation techniques.
As long as the Qianyuan Sword was promoted to the next grade, Chen Fei's combat power could undoubtedly take another significant leap.
The method of improving one's spiritual weapon by absorbing the spiritual essence of other spiritual weapons was quite wasteful. Few cultivators chose to do so.