you can take Islamd line from Tin Hau to Central and then walk to Hong Kong Station to change Tung Chung line from Hong Kong to Nam Choeng.Finally,change West Rail line from Nam Choeng to Tuen Mun and then get off at exitB or F1 to take light rail route No.505,507 or751 to Town Center stop
Fee:$21.9/$11(for Octopus)
$25/$13(for single ride tickets)
Times:49 mins(not included the waiting times and walking times)
Or you can take MTR Island line from Tin Hau to Central/Admiralty/Wan Chai Station and take KMB bus No.960 or 961 to Tuen MunTown Center
Here is the information:
Get On Point:灣仔碼頭總站,菲林明道,盧押道,太古廣場,中銀大廈,利源東街,永吉街 or 文華里
Get Off Point:屯門市廣場
Fee:$3.6/$4.4+$18.8=$22.4-$23.2
Times:5/9+80=85-89 mins(not included the waiting times and walking times)
KMB bus No.960 information:
http://www.kmb.com.hk/chinese.php?page=search&prog=route_no.php&route_no=960
KMB bus No.961 information:
http://www.kmb.com.hk/chinese.php?page=search&prog=route_no.php&route_no=961
Hope above information acn help you!