Can u tell me for the route from HK Airport to Window Of The World?

As you prefer cheap transportation, the direct cross-border coaches are suggested. You can take that to SZ Nanshan and then transfer to local Luobao Metro line or a taxi to the WOW. The whole journey shall take 3.5-4 hours and the cross-border coach costs 150-170HKD per person.

As well as that, you can also take a ferry from HKIA to SZ Shekou if you will arrive at HKIA by air. The ferry takes only half and hour. It costs CNY260-290 per person for different classes of cabins. After arriving at Shekou port, you can walk to Shekou Port metro station to take Shekou subway line to WOW directly!