Introduction to Su Causeway at Spring Dawn: Su Causeway starts from the foothills of Nanping Mountain in the south and ends at the foot of Qixia Ridge in the north, with a total length of nearly three kilometers. It was built by dredging the West Lake and using the excavated mud when Su Dongpo was the governor of Hangzhou. In order to commemorate Su Dongpo's achievements in managing the West Lake, later generations named him Su Di.