C835 Yin and yang toxin

As the spirit force in Cheng Fei's body slowly fused into Mu Ling's body, the spirit force in Cheng Fei's body was also rapidly running out, and the toxic elemental energy in his dantian was also moving nonstop.

"What is this?" Mu Ling looked at Cheng Fei, his face revealing a trace of doubt.

She felt a kind of shocking power from Cheng Fei's body, and it was as if he was addicted to it