C115 Ten Treasures(1)
A Profound Level low-grade martial skill with complete autonomy was more than enough to do a lot of things. If Zhu Qing was willing to teach him the 'Four Symbols Sword Formation', who knew how many people would be willing to give their lives to him?
For ordinary warriors, they might not be able to come into contact with a Profound Level low-grade martial skill in their lifetime