In the center (as shown in the figure, AB lines are parallel)? 2)? Turn the compass gently in the square garden so that it is aimed at Tianchi (inner garden)? 3)? It is very important that the end of the needle with a small hole must coincide with the two little red dot on the red line, and the position cannot be lost. ? 4)? At this time, what is the word under a red cross line on the compass perpendicular to the door? (lettered on the 24th floor of the compass) is the sitting direction of the house, with one side leaning against the chest as the direction and the other side sitting.
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