Ocean Park to Hung Hom Station

From Ocean Park, you can take bus 629 to Admiralty first. It costs HKD10.6 and takes about 30 minutes. Then take MTR from Admiralty to Tsim Sha Tsui and walk through the special pass to East Tsim Sha Tsui. Then take metro to Hung Hom. The cost is HKD13.5 and takes about 20~30 minutes. The last train from Hung Hom to Guangzhou leaves at 19:24. Thus, you'd better leave rthe park before 17:00.