Imperial planners split this water complex into 北海、中海、南海 — north, central, south seas. Most travelers only ticket 北海公园, which is enough: boat ripples, kite strings, elders dancing at the shore like a neighborhood park wearing silk history.
The hanzi payoff is directional: 北 places you relative to the palace. Compare with 景山 (scenic hill) next door — hill for panorama, lake for breeze. White Dagoba on the island still pulls eyes upward while skaters cut the near shore. Ticket lines cluster at south gates; the water itself stays democratic — locals fish, tourists rent boats, both read 海 on boards without meaning ocean. You’re inside a compass diagram the emperors could read from the Forbidden City roofline.