Gànxiàn
Gan County shared the city of Ganzhou, where the Zhang and Gong rivers meet to form the Gan. Water surrounds the city on three sides, and its walls, bridges and drainage channels reflect the long effort to live beside the rivers. From the Eight Views Terrace on the northern wall, the converging waters and surrounding hills could be seen together.
Under the Song, officials strengthened the city with brick walls and built floating bridges across its rivers. The Fushou drains carried water from streets into the Zhang and Gong; gates closed when river levels rose, limiting the danger of water flowing back into the city. Later generations repaired the walls and continued to use the bridges and drains, preserving the work of the earlier city builders.