Hi, I'm staying at Metropark Hotel- Wan Chai, how could I get to cable car to Tian Tan Buddah?

You can take Island Line from Wan Chai Station to Central Station. Then walk to HK Station and take Tung Chung Line to Tung Chung Station, Exit D. The duration is about 50 mins. And the ticket fare is about 22 HKD per person. After arriving, walk to the Lower Cable Car Terminus and take it to the Big Buddha directly. Have fun!