Although the Life Extension Technique of the Ten Thousand Laws Immortal Sect is mystical, it requires capturing a top Demon King on Boundaryless Mountain while the Black Tortoise Race Demon King is alive, then forcibly seizing their foundation and life source... This technique, although extremely effective, is indeed very sinister and venomous, almost on par with the demon techniques of the Profound Yin Demon Sect's demons who use human beings to refine Demon Artifacts, all aiming to poison other beings and harm their foundation to enhance one's own. Such is an Evil Technique!
This time, it was the Elder Clan Leader of the Black Tortoise Race who, after hearing my request, rallied the Ninth-Grade Demon Kings of the Black Tortoise Race to proactively force out some Essence Blood... If not for this, even if I had mastered this Life Extension Technique of the Ten Thousand Laws Immortal Sect, I wouldn't have dared to use it!
