Down the elevator and turn left on the left side of the building, if facing the school and turned to walk back over the road, building 3, met the building 4.
Down the elevator, turn left If the left side of the building facing the school. Then turn back the walk along the road through the three buildings will have four buildings.
Down elevator, then turn left. On the left side of the building if facing the school. Walk straight along the road and turn back through the building to see the building, 4 3