The Return of the Su

"Qin Lang, what are you looking at Have you gone senile from being locked up in prison for the past two years",Qin Lang looked at the two men with icy eyes. As a decisive Immortal Venerable from another world, Qin Lang's gaze sent chills down their spines.,The doctors in this world can't cure this poison. Who is it, and what kind of grudge do they have against their father to inflict such a deadly blow。