Search our selection of houses for sale in Pui O. Pui O is on the South Lantau Road, a bay shaped by the Chi Ma Wan Peninsula and the lower slopes of Sunset Peak, all bus routes between Mui Wo and other points pass through Pui O to Chi Ma Wan. A main river from a valley to the east and other small river gather at Pui O forming an estuary of wetland. Villagers enclosed the wetland and converted it into rice paddies. This is indicated by the name Ham Tin.