Operation Lipstick - Cheng Pei-pei (1967) - Tai Mo Shan Road, Tsuen Wan

In case you weren't convinced that the previous location was Route Twisk, the next shot of the kidnap truck shows it turning off Route Twisk and up Tai Mo Shan Road. You can barely make out the words of the road sign but this junction looks quite similar even today despite all the extra tree and vegetation growth covering the hillside. Here's a GoogleEarth comparison.