It takes 20 minutes from Shenzhen to Hong Kong by high-speed rail, which is really convenient. I stayed in a youth hostel and found that this hostel is the worst one I have stayed in in the past few months. Apart from the disadvantages of poor environment and small space, the service is also very poor. I booked one night wrong, and it was clearly stated on the Internet that I could refund in advance, but they refused to refund. Elevators throughout the building...