Weird Things in the Republic of China: the Last Barber

My grandpa has told me since I was little that there are four kinds of people you cannot mess with. Those who tie paper (paper tie maker), those who behead heads (executioner), Erpilian (two cobblers, also known as connectors), and coffin makers (coffin shops). But there is a fifth kind, Grandpa never mentioned it. Until that day, my grandfather went out for many days and did not come back. A butcher died in the village. The village chief staggered to find me. 'Xiaotian, I'm awake...'