It was beyond common sense for a sword technique to have the same effect as an emperor domain. Even eminent figures like the seven great emperors had never heard of such a thing. After all, an emperor domain was commonly formed by combining an emperor's inner energy with his own will. A non-emperor realm cultivator could never generate such incredible energy. Even a half-step emperor could only barely create an emperor realm domain. Moreover, it would merely be an imitation and not a true domain. In fact, it was already an incredible achievement if they could create a defective domain. To imitate an emperor domain with a sword technique was unthinkable even if it wasn't a true domain.