We stayed at the Grand Hyatt Hotel in Hakata Canal City, mainly for the convenience of buying, buying and eating. The hotel room can see the entire mall, and the floor-to-ceiling glass in the hotel lobby is the background board of the water curtain laser show at night. We watched a water curtain laser show completely, and finally there is an interactive link with the audience. We need to scan the QR code with our mobile phone and connect to the system. It is also a relatively advanced interactive experience!