"This...this is red, highly poisonous true energy?" Chen Zhou said in shock.

“Yes, now almost all the elderly people have had their internal poisonous energy change from black to this color. Moreover, Senior Qianyin was once one of the elders of our sect, with a strength reaching the Golden Core stage. When he was poisoned by the internal poisonous energy, he was one of the strongest in the sect. However, over the past ten years or so, the internal poisonous energy has been constantly eroding his internal energy, and now his strength has dropped to the Qi Refining stage. Furthermore, most of his body is stiff, and he even has difficulty moving around,” Qianxin replied.

Chen Zhou hadn't expected that after absorbing so much true energy, the highly poisonous true energy would undergo such a dramatic transformation, even changing its color to such a vibrant red.

The poisons Chen Zhou had previously neutralized were all ordinary, black, highly toxic true qi. Therefore, his illusory version of the Poison Tree Root had a suppressive effect on them, which allowed him to successfully pull them out.

Now that the highly toxic true energy has turned red, it can be said to have been upgraded. Therefore, Chen Zhou is not confident that his illusory version of the poisonous tree root will have any substantial effect on the highly toxic true energy.

"It seems that this highly poisonous true energy undergoes a qualitative change after absorbing the strength of a Golden Core cultivator, and it has now turned into this bright red true energy. Moreover, Senior Qianyin's body is so weak right now, so in a sense, it's difficult to find a way to save her," Chen Zhou calmly analyzed. He could say that he really didn't have any substantial solutions at the moment.

"We can't even do anything with ordinary poisonous internal energy, let alone use this upgraded version of poisonous internal energy."