As shown in the figure, the red line is the wind direction unaffected by the geostrophic bias force, that is, it should be perpendicular to the isobar, and the high pressure points to the low pressure. In order to distinguish, I didn't use arrows; In the northern hemisphere, due to the influence of geostrophic deflection, it will tilt to the right, so a southwest wind will blow in one place; Similarly, it is concluded that the southeast wind blows.