you can take MTR from Lai Chi Kok to Mei Foo or Kwai Fong to change KMB Bus No.46X or 47X to Shing Mun Tunnel Interchange to change KMB Bus No.278X to Sheung Shui.
Fee:$3.6+$7+$4.5=$15.1
Times:80 mins(not including the waiting times)
Or you can take KMB Bus No.72 from Cheung Sha Wan Bus Terminus to Tai Wo Bus Terminus and change East Rail Line to Sheung Shui.
Fee:$6.3/$8.4+$3.5=$9.8
Times:79 mins(not including the waiting times)
Or you can take KMB Bus No.86 from mei Foo Bus Terminus to Sha Tin Central Bus Terminus and take East Rail Line to Sheung Shui
Fee:$5.6/$7.8+$5.6=$11.2 up
Times:90 mins(not including the waiting times)
Or you can take KMB Bus No.86B from Mei Foo Bus Terminus to Tai Wai Railway Station Bus Terminus and change East Rail Line to Sheung Shui.
Fee:$5.8+$5.6=$11.4
Times:80 mins(not including the waiting times)
Bus 278X Details:
http://www.kmb.com.hk/chinese.php?page=search&prog=route_no.php&route_no=278x
Bus 72 Details:
http://www.kmb.com.hk/chinese.php?page=search&prog=route_no.php&route_no=72
2009-06-05 23:49:41 補充:
Bus 86 Details:
http://www.kmb.com.hk/chinese.php?page=search&prog=route_no.php&route_no=86
Bus 86B Details:
http://www.kmb.com.hk/chinese.php?page=search&prog=route_no.php&route_no=86b
Hope above information can help you!