Chapter 623 Can This Person Be Trusted?

Chang Hai held up the black box in his hand, his impatience evident. He twisted his neck, a displeased expression on his face. This feeling of discontent was not only due to Xiao Wang's words and demeanor, but also stemmed from the discomfort of being confined in the dirty, damp underground secret room for an extended period. Chang Hai had been secluded in this underground location for days, focusing on the development of artificial organs, only venturing out to gather necessary medicinal materials. As he stood there, his complexion grew even paler, resembling that of a vampire with lips tinged gray and lacking vitality.