For example , the cost of the 3-minute journey from Admiralty to Tsim Sha Tsui across the Victoria Harbour is ( as of 2005 ) HK$ 7.9 using the Octopus card , compared with HK$ 9.0 for a single-journey ticket . For example , the cost of the three-minute journey from Admiralty to Tsim Sha Tsui across the Victoria Harbour is ( as of 2005 ) HK$ 7.7 using the Octopus card , compared with HK$ 8.5 for a single-journey ticket .