 Sheung Yiu Village, once opened as a Folk Museum, was a good example of a fortified settlement well known for lime-making in those days.Until 1970, the part of Sai Kung beyond Tai Mong Tsai was still remote, reachable only on foot or by "kai-tos" (local ferry).However work started in 1971 to create the High Island Reservoir, with a capacity of , by closing off both ends of the Kwun Mun Channel which separated the High Island from the main peninsula.