Housing prices in the north of the city are cheaper than in the south.
Tips
usage
Paired set: 城北 / 城南 / 城东 / 城西 (north / south / east / west of the city) for orienting within a city. More colloquial than the formal 北部 / 南部. Some cities also formalize this into districts — e.g., Hangzhou's 城北 area.
