A residence R 1: light yellow.
Second-class residence R2: dark yellow
Commercial C2: Red
Cultural entertainment C3: purplish red
C6 in primary and secondary schools: orange
River e: light blue
Municipal infrastructure u: blue-green
Road S 1: black, road center line: red.
S3 parking lot: dark gray
Industry m: blue department (people with Tongji and Hajian backgrounds); Brown system (people with the background of urban construction and transformation in Tsinghua and Wuhan)
Green land g: all kinds of green land.