"What? What did that mean?"
"At intervals, long or short, one of the Ni Family's Gu Masters would undergo a phenomenon known as Bloodline Condensation. If they endured it, Immortal Gu would gradually form within their body."
Qi Zai gazed at the vast rolling sea of clouds ahead and continued, "Ni Ren's purpose was to help the Ni Family's descendants produce Gu Immortals. He truly was extraordinarily talented. Others could not extract the Immortal Gu he refined into his descendants' bloodlines. Even if they tried to refine them anew, they would inevitably fail. Moreover, he had specially selected these Immortal Gu so they did not need immortal essence to activate them; even mortals could use them, though the price was rather steep."
Qi He blinked repeatedly, and admiration for Ni Ren rose in her heart as well. "If I had Immortal Gu to help me, perhaps I could have endured the tribulation on my own too."
Qi Zai suddenly gave a sinister chuckle, cold and gloomy air spreading from him. "What a pity that despite Ni Ren's painstaking efforts, not a single Gu Immortal ever emerged from the Ni Family over several thousand years. The price of using the Immortal Gu he chose was too great. Even if an Immortal Gu could not be snatched away by others, for a mortal to possess it was like a baby clutching a treasure—how could they possibly remain safe?"
"Once an Immortal Gu formed within a member of the Ni Family, we called them the Mud Aspect of their generation. The first Immortal Gu produced within the Mud Aspect was an information path Immortal Gu called 'Speaking Truth and Falsehood.' This Gu could learn information from between heaven and earth and make a Gu Master blurt out answers, but it could only say