 The Antiquities and Monuments Office found the Chen's relic in May, 1997, featuring a sand dune containing two culture levels.The excavation team found 4 postholes, 9 stone stoves, 3 kilns and 1 grave which it was the first time for Hong Kong excavating sun and moon utensils.The Wu's relic was found in September, 1997 by the same excavation team.