Since that's the case, Xiao Qiang naturally wouldn't let him out.
"Let the Dark Primal Stone suppress you forever until your last trace of soul is obliterated." Although he was quite tempted by the so-called Xuantian Venomous Dragon, Xiao Qiang knew that making a deal with a demon would inevitably lead to eternal damnation, death without life.
The Xuantian Venomous Dragon was certainly important, but he must first survive. Making a deal with a demon could ultimately mean he would be the one devoured by the demon. Xiao Qiang naturally understood this logic.
