In geomantic omen, how to explain the word Tiantong on the stone carving on the house?

There is a reason for this. It usually appears in an already built house, and then another house is built on the left or right side of the house. In this case, Zhu Shutian Tongzi needs to be placed on a stone and buried in the soil for fixation. This is because the house was originally fixed and another one was built, so the original house has nothing to do with the present house itself. In this case, family discord often occurs. Bian Xiao's family is like this, but unfortunately, my father doesn't listen to me. Today's Bian Xiao brothers are not harmonious. Ha ha.