How do i get from shenzhen luohu to Hongkong BP international hotel?

Oh, you need to pass the custom from Shenzhen Luohu first. After entering into HK, you can take East Rail Line, get off at Kowloon Tong Station. Then transfer to Kwun Tong Line to Mong Kok Station and take Tsuen Wan Line to Jordan Station, Exit C2. After arrival, walk to southwest around 330 yards and find the destination directly.
The whole way takes around an hour. And the ticket fare is 39.9 HKD per adult.