Another theory is that the name was chosen in the 17th century, when naval battles were fought against pirates from Japan at Tseung Kwan O.

[citation needed] The landfill did not exist when the bay was first named, so "junk" very likely refers only to ships, not the detritus deposited there in recent years.

A genuine record of Guangdong province was published during the Ming Dynasty: Residents inhabited Tseung Kwan O area then.

Hang Hau quickly emerged into a market town and became the most populated and prosperous place in the whole of Clear Water Bay Peninsula; it continued for the next few centuries as such.

[3] Other towns and villages include Rennie's Mill (Tiu Keng Leng), Hang Hau and Yau Yue Wan.

Rennie's Mill was where Kuomintang loyalists were settled following the end of the Chinese civil war, and Hang Hau had a ship-building industry.

To maximize the utilization of the road infrastructure and to meet the demand for land for public housing, the Government decided that the New Town should include a Phase II development, with an increase in the projected population to about 325,000.