First ask the Vordigang people to help you disinfect the head crabs, then pull out the fangs of the head crabs before eating them in the hot pot. It is recommended to use the spicy pot base.
Both the Voldigans and the rebels like to eat headhunting crabs (actually, the nutrient solution distributed by the Union Army is tasteless). This is a special delicacy in City No. 17 and must be tasted.