In the past, when the social economy was not so developed, there were always several craftsmen in the village. Whenever the family needs anything, they go to these craftsmen as if they can do anything. If you accidentally offend these craftsmen, your life may be affected.
For example, blacksmiths mainly make some iron tools, such as pots and pans, and tools used by farmers in the village to plow the fields. Masons mainly deal with stones, such as paving roads and repairing bridges. Some masons also carve tombstones, and their hand-made tombstones are also extremely beautiful. In that era when there were few plastic products and iron products, carpenters became very important. Carpenters are needed for tables, stools, beds, wardrobes and shelves at home, especially houses. At that time, there were fewer brick houses. These villages are basically houses with civil structures, and the roofs, beams and columns need the help of carpenters.
Villagers attach great importance to building houses, so they usually invite carpenters to help them build houses and provide them with delicious food. They are afraid that the carpenter will be unhappy and will not build a house with you properly. The quality of the built house is not guaranteed, or they are afraid that the carpenter will deliberately delay the construction of your house, but you can't say anything yet. So people said at that time not to offend carpenters. They needed carpenters to build houses before they died and carpenters to use coffins after they died. If they offend the carpenter, they will be asking for trouble.