Everyone had no choice but to agree. It was not their place to complain, or else they might lead their kingdoms in destruction. Besides, a 50% share for the several kingdoms weren't actually not bad if we look it the way the empire spoke. The empire's forces and General Xuazong were the one who would be the vanguard, the main force of this group.
As this tomb was made by an ancient emperor, everyone assumed that dangers were lurking all over the place. It was not an exaggerated if people were to die here.
"Everyone, there's one more thing I will like to say." General Xuazong called everyone's attention again, "Please be mindful of your lives during the expidition. Our empire will not be held liable for what will happen to you or your subordinates. We will just be the one on the frontline to be the vanguard."