The motor in the center of the square platform exertsforce around it, pulling the slider on the track and drivingthe steel strip to deform and move. In map symbolsmulti-layer loops indicate changes in altitude, referred toas contour lines in land areas and isobaths in water areasThe map of movement records the geography of circula-tion, which corresponds to the complex hydrology and ev-er-changing situation of Yangshan Deepwater Port.Thefishing rod hanging above it is like the East Sea Bridgefirmly grasping the bait fshing that hangs alone overseas.