you can take MTR Island Line from Quarry Bay to Cental and then walk to Hong Kong Station change Tung Chung Line to Nam Cheong Station.Now,you can take West Rail Line from Nam Cheong Station to Siu Hong Station.After that,you can take light rail route 505,615 or 615P to Leung King Station.
Fee:$22.7(For Octopus)
$24.5+$4=$28.5(For single ride ticket)
Time:62 mins(not including the waiting time)
Or you can take MTR Island Line from Quarry Bay to Admiralty and then change Tsuen Wan Line to Mei Foo Railway station or Tsuen Wan Railway Station to take KMB Bus no.58X or 58M.Get off at Leung King Estate Bus Terminus.良景商場 is near the bus terminus.
Fee:$11.2+$11.3/$7.9=$18.1 up
Time:100 mins(for take 58M or 58X Buses)
Finally,you can take MTR Island Line from Quarry Bay to Wan Chai,Admiralty or Central to take KMB Buses no.960 to Tuen Mun.Get off at Sai Wan Court Stop and walk straight on light rail track (Attention:It walk to the Tin King,Siu Hong and Yuen Long district)about 5 mins.If you see the market ,cross the road to Bus terminus.The bus terminus is next to 良景商場
To go to Kwai Kong,you should take KMB Bues no.58M From Leung King Estate Bus Terminus to Kwai Fong Railway Station.Get off at Metro Plaza or Kwai Fong Railway Station Bus Terminus.
Fee:$8.2
Time:1 hour(including the waiting times)
Hope above information can help you!