A Gold Core fragment, on average, could last about 20 failed experiments on living aborigines. When another entirely black and swollen aborigine lying on the stone bed turned into ashes, another piece of fragment between the tweezer in his hand also vanished into nothingness without warning. Zhang Lisheng sighed and frowned as he muttered to himself, "Immunity! Looks like it's a problem of immunity. I should be able to succeed by making a small adjustment on the TUH's emergency strength."
Zhang Lisheng had already muttered the same self-comforting words for the umpteenth time already. Then, he spent several dozens of minutes to reformulate another potion by carefully measuring his new idea with an automatic pipette before walking towards the door of the treehouse and shouting, "Another brave warrior may enter now!"