Li Shuanglin, is the meeting in the municipal government building at three o'clock or nine o'clock?

At present, the pattern of urban architecture is complex, so the orientation of sitting should be analyzed in detail. The sitting direction of the house is determined by the longitudinal axis of the building. Generally speaking, the vertical line on the back wall of a house is sitting, and the other end of the vertical line is sitting. Sitting orientation includes two aspects: the sitting orientation of the house and the sitting orientation of the door. The sitting direction of the door and the house is the same and different, which needs careful and accurate measurement.