It's a high-level secret skill within the Demonic Dragon Palace. Only some of their disciples with extremely high statuses would be able to learn and cultivate it. This skill is mysterious and cruel, as it requires one to dig out some of one’s flesh before implanting the flesh and blood of a demonic dragon within one’s body. After nourishing the demonic dragon’s flesh and blood with one’s own blood, one could activate it during desperate times, causing one’s strength to drastically increase.
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