Setting aside the fact that Bei Tangsu could draw upon the power of Demonic Saber Jingqing, making his combat strength uncertain, Purple Lightning Saber Lord might not necessarily be his match.
Even if Purple Lightning Saber Lord truly succeeded in cutting him down, it might not be a good thing for Purple Lightning Saber Lord.
First, this man was, after all, of imperial blood. Moreover, under the imperial clan's special patronage, he had entered Divine Saber Hall. If Purple Lightning Saber Lord killed him like this, how could the imperial clan let the matter rest?
Among the Nine Surnames and Thirteen Families, the Bei Tang family ranked first. No matter how weak the imperial clan had become, it was still the imperial clan—not something a mere Purple Lightning Saber Lord could shake or offend.
Second, quite a number of Divine Saber Hall's upper echelon thought highly of Bei Tangsu and were willing to promote him.
If Purple Lightning Saber Lord killed Bei Tangsu, he would inevitably offend those people.
Moreover, this was not even Purple Lightning Saber Lord's greatest loss.
The greater loss was that if Purple Lightning Saber Lord assassinated Bei Tangsu, the image he had built up all along would collapse. Forget the others in Divine Saber Hall—even many within their Purple Lightning Lineage would likely become restless and dissatisfied.
Leaving all that aside, Purple Lightning Saber Lord was not the sort of person who could assassinate another.
Whether outsiders, the person beside his pillow, or his son, all had an exceptionally clear understanding of Purple Lightning Saber Lord.
He was a true man of the Way of the Saber. As for his passion and talent for the saber, one could not say they were the finest in Divine Saber Hall, but they were certainly a rarity seen