Spearhead in Hong Kong - Stafford Gordon (1981) - Pak Nai, Yuen Long

In the second of only two locations from the fourth episode, The Macau Connection, (the first location being Lau Fau Shan) Sgt. Bilinski is kidnapped by the snakeheads because he won't overlook his soldierly duties and a big search is undertaken by the army and local police force. He turns up later in the episode unconscious and on a beach somewhere. Actually, the beach location is not that far away - it's just down the coast in Pak Nai - still within the boundaries of Yuen Long District though, despite its proximity to Tuen Mun.

Spearhead in Hong Kong - Stafford Gordon (1981) - Lau Fau Shan, Yuen Long

For the fourth episode - The Macau Connection - the soldiers are on II patrol in the far north west of the territory in Lau Fau Shan. Sgt Bilinski has been compromised in Macau by the snakeheads and use this as an opportunity the distract the team and get a whole boat load of illegal immigrants through the cordon.

I neglected to take a screen shot but one of the first sequences of the show is film of soldiers' boots stomping through the beach littered with the oyster shells that made this location so famous. But you can make some out on the beach in the first image below.