What is the most convenient and quick way to stay at Eaton Hotel in Hong Kong from Shenzhen Airport?

Take a through train from Shenzhen airport to Mong Kok, Hong Kong (you have to get off at the customs on the way). Take a taxi after that. Not far away. Walk to Prince Edward Station, take the subway Tsuen Wan Line four stops to Jordan, and exit to the north.

Go to Hong Kong Airport, walk to Nathan Road and take A2 1 bus, and you will arrive at the airport. About an hour.

Answer supplement:

In the arrival hall of Shenzhen Airport, you should look for the counter of China Connect or China Port Connect around the island (both in Building A and Building B) and take the bus to Mong Kok, Hong Kong. I remember it was around the island. It seems that with the Hong Kong Stock Connect now, tickets are easy to buy. However, it is impossible to get on and off without luggage. When passing through the port, all through trains must get off with all their luggage and get on after passing through the customs. And it is possible to change trains after customs clearance, which depends on the arrangement of the bus company. It's not because you may have to change trains when getting on and off the bus, but because you have to go through possible customs inspection when crossing the port (now it's all spot checks). It is impossible for the bus company to be responsible to the customs for the contents of the guests' luggage. It takes about two hours to reach the finish line.