Pick up the Magic Power and Accidentally Cultivate It to Become the Eternal Demon King

[The methods are ruthless + flexible and flexible + the pace is neither fast nor slow + there is a female protagonist + no system] This is a protagonist who is greedy for money and lust, and will do anything to become stronger. Once he traveled through time, he became a loser in the world of cultivating immortals, and was subjected to all kinds of cold eyes and bullying. A sudden turn of fate! By chance, Lu Jiutian came across the body of a powerful demonic man, and obtained from it the demonic power that could swallow his life and blood, as well as a mysterious bronze fragment that could conceal his aura. I thought this was the beginning of changing my destiny and becoming a strong man, but I didn't expect that the magic power had a fatal side effect. It had to be suppressed by the blood spirit pill, otherwise it would explode and die! In order to survive, no longer be oppressed, and to become a respected and powerful man, Lu Jiutian had no choice but to find a way to solve the problem. He adheres to the principle of "I will not offend others unless they offend me. If someone offends me, I will make his life worse than death" and fight his way through the world of the jungle! Walking on mountains of corpses and seas of blood, going through all kinds of difficulties and dangers, never stopped! Many years later, when all living beings look back. Lu Jiutian, who was once regarded as a weakling, has turned into a peerless demon king with monstrous flames!