Section 4 begins at Ngong Ping, where the Wisdom Path, a landscaped installation of 38 massive wooden pillars arranged in the pattern of the infinity symbol, is seen not far away.  The wooden columns, inscribed with the original calligraphy featuring the Heart Sutra from world-renowned sinologist Professor Jao Tsung-I, are infused with religious elements and blended perfectly with the rural surroundings.  The footpath then joins Nei Lak Shan Country Trail and Ngong Ping Road, along which you can see the mountain range of Lantau Peak on your side.  Walk past the north side of Shek Pik Reservoir and be impressed by the placid blue waters of the reservoir.  Now a two-way road runs across the top of the dam, but prior to the completion of the reservoir in 1963, the site was inhabited by several villages, including Shek Pik Wai, Fan Pui Tsuen, Kong Pui Tsuen, Sha Tsui Tsuen, Chung Hau Tsuen, and Hang Tsai Tsuen, of which villagers used to farm somewhere down the reservoir.  Because of the construction of the reservoir, they were relocated to Tsuen Wan, Mui Wo, and Tai Long Wan, which is near Shek Pik.  Running both in woodland and beside vehicular roads, this section leads down gently and steadily – its level of difficulty is between the previous section and the next.  It definitely is a hike to enjoy.