How can I get back to Hong Kong Kowloon Hotel by a2 1 from Asia International Expo Hong Kong?

Longbao Hotel, Austin Road, Tsim Sha Tsui, between Jordan Subway Station and Austin Station, are two different subway lines. I suggest you:

1) Walk 7~ 10 minutes to Jordan Station, take one to Tsim Sha Tsui, and walk 5~8 minutes to the Science Museum;

Take children and the elderly, or take a taxi directly to the Science and Technology Museum.

2) After coming out of the Science Museum, walk for 5-8 minutes to the Star Ferry Pier, take the 15C bus to central ferry piers, take the cable car to the Garden Road cable car station, and then take the cable car to the top of the mountain to enjoy the wax museum and the top of the mountain. Go back the way you came,

Or take the 15 bus back to Central Exchange Square and take the subway directly back to Jordan Station.

3) Walk directly from Longbao 10 minutes or take a taxi to the transit bus stop of China-Hong Kong Passenger Terminal, and take the transit bus to Shenzhen Airport.

Have a nice trip.