That Senior must be a peerless expert who was truly proficient in swordsmanship.
It was just that he was forced to give up using the sword in order to pretend to be mortal.
The most aggrieved thing for a swordsman was that he couldn't use the sword despite having it.
Lou Hongzhi had already imagined that the Senior couldn't use the sword, and he was able to resolve all the knots in his heart in the form of calligraphy.
Otherwise, why would there be that poem:
Ten years of sharpening a sword, but the frost blade has not yet been used.
Today, who has wronged the king?
This poem had been written into Lou Hongzhi's heart.
When he was in the the Central Plains, in order to suppress his temper, his Master gave him a sword. He could carry it on his back, but he did not allow him to draw his sword. It had suffocated him.