Mo Jizi was mo Lingzi's martial uncle, an elder of the demon Sword sect. He was completely different from the cultivator that Zhao Hai had killed last time. He was a cultivator that had truly comprehended the slaughter Sword Dao. In other words, he had truly comprehended the power of laws.
However, people like him usually went into seclusion for a long time to make their strength reach the next step. Just like what Zhao Hai said, the power of law also had strong and weak, but in fact, the power of law did not have a strong or weak difference. This sounded very contradictory, but in fact, it was not contradictory at all.