An underwater-above water accommodation is adapted for human occupancy under water, above or on the surface of water and comprises an underwater accommodation and above water accommodation slidably mounted on preferably three, vertical legs. When the server receives a startup command sent by a terminal device, the server, through the Internet, receives a message sent by the application program and sends out the message according to the remote notification mode. The biochip includes a substrate, for carrying bio-molecule droplet, and a stamp marking area, for receiving or displaying a stamp for identifying whether the biochip is used.