The square bricks shall be marked according to the design size, and the space joint shall be reserved when marking. The space joint is generally 5mm-12mm. The paving shall be carried out after the base is solidified. During the paving process, it shall be pushed gently by hand to balance the brick bottom and the paving surface, so as to facilitate the discharge of air bubbles. Then, it shall be gently knocked on the brick surface with a wooden hammer to make the brick bottom * * * eat the slurry, so as to avoid hollowing; Then knock the brick surface to be flat with a wooden hammer, and measure with a level ruler to ensure that the square bricks are paved horizontally. Paving and pointing at the same time, pointing with cement mortar, or adding color additives as required. Generally, the width of the gap is 5-12mm, and the depth is 2mm. The solid base course and full pointing can make the square bricks more * * * and avoid falling off and cracking during use. During construction, evenly sprinkle the wood bran on the paving surface in time, clean it with a broom, and wipe the cement or other sticky dirt left on the brick surface, so as to avoid that the dirt on the surface is difficult to clean due to long time.