Driving back to Christchurch from the west coast of South Bird along Highway 73 is bound to pass through Arthur Pass National Park. The main landscapes are steep slopes and countless rivers and canyons. There are many narrow bridges along the way. Drivers should pay attention to the signs of giving way, small arrows to big arrows, and an iron bridge is also very special. Besides, the nearby Pearson Lake scenery is also very good, so they can park and take pictures and rest.