The north China and Ordos block have the dilatation strain mainly and anti-clockwise rotation for the effect of extrusion and counteraction in the Pacific Ocean block.

• 这种推挤力和太平洋板块阻碍、遏制作用，造成了华北块体、鄂尔多斯块体以拉张为主的应变和逆时针旋转。