Lu Changsheng took out a Purple Gold Bagua Gourd sealed with Talismans, which contained a drop of Demon Blood.
This was a drop of the Ancient Demon Marshal's blood, extremely pure and containing fragments of the Demon Marshal's origin.
Lu Changsheng asked Dugu Aotian to Refine the Demon Marshal's blood to enhance his Demonic Cultivation Skills.
Dugu Aotian used Ice Lotus Immortal Dew to maintain his original heart and began to Refine the Demon Blood.
As the Demon Blood merged into Dugu Aotian's body, purifying his marrow and veins, Dugu Aotian's eyes turned blood-red, and he let out a painful low growl.
The blood of the Ancient Demon Marshal contained the understanding of the Great Dao by that Demon Marshal from Ancient Times, as well as memories of the Demon Sects' Cultivation Techniques he mastered.
