You may take Hong Kong MTR Tsuen Wan Line(https://www.travelchinaguide.com/cityguides/hongkong/transportation/metro-tsuenwan-line.htm) to Admiralty, and then take Bus 629 to Ocean park. Take bus 629 back to Admiralty, walk for about 20 m to the subway station, and enter from Entrance B, and exit from J2, and follow the road borad to the peak tram.