The conceptual and operational process of refining the Soul-sifting Banner, and even its inherent way of attacking souls, diverges significantly from the present practices in the world of cultivation. Even though the banner is a magical instrument, it can be considered a lost technology.
For a cultivator who follows the 'Accepting All Things' method, facing the Soul-sifting Banner is like being a lamb awaiting slaughtering - no wonder the Fierce Ghost General insisted on acquiring the Soul-sifting Banner first- Sun, slightly contemplating, roughly guessed the general historical records of the decline of the 'Accepting All Things' sect: someone accidentally refined the Soul-sifting Banner, didn't resonate much with it initially, but then encountered a powerful cultivator, absentmindedly shook it, and was stunned themselves - the effect was too good!