A system comprising a first remote control, a terminal device, and a first display device; the first remote control comprises a first NFC tag, the first NFC tag stores first information, and the first information comprises an identification code of the first NFC tag; the terminal device is configured to: obtain the first information when a distance between the terminal device and the first NFC tag of the first remote control is less than a threshold, and determine whether the first information is recorded in the terminal device; when the first information is not recorded in the terminal device, initiate a first scan for nearby display devices; receive first scan response messages from the nearby display devices; display, by the terminal device based on the received first scan response messages, a first pop-up box, the first pop-up box includes a first list of the nearby display devices including the first display device; receive a first operation of a user, the first operation is used to select the first display device from the first list; in response to the first operation, establish a first screen projection connection with the first display device, and save a first correspondence between the identification code of the first NFC tag and the first display device; and when the first information is recorded in the terminal device, establish a second screen projection connection with the first display device in accordance with the saved first correspondence between the identification code of the first NFC tag and the first display device. the first remote control comprises a first NFC tag, the first NFC tag stores first information, and the first information comprises an identification code of the first NFC tag; the terminal device is configured to: obtain the first information when a distance between the terminal device and the first NFC tag of the first remote control is less than a threshold, and determine whether the first information is recorded in the terminal device; when the first information is not recorded in the terminal device, initiate a first scan for nearby display devices; receive first scan response messages from the nearby display devices; display, by the terminal device based on the received first scan response messages, a first pop-up box, the first pop-up box includes a first list of the nearby display devices including the first display device; receive a first operation of a user, the first operation is used to select the first display device from the first list; in response to the first operation, establish a first screen projection connection with the first display device, and save a first correspondence between the identification code of the first NFC tag and the first display device; and when the first information is recorded in the terminal device, establish a second screen projection connection with the first display device in accordance with the saved first correspondence between the identification code of the first NFC tag and the first display device. obtain the first information when a distance between the terminal device and the first NFC tag of the first remote control is less than a threshold, and determine whether the first information is recorded in the terminal device; when the first information is not recorded in the terminal device, initiate a first scan for nearby display devices; receive first scan response messages from the nearby display devices; display, by the terminal device based on the received first scan response messages, a first pop-up box, the first pop-up box includes a first list of the nearby display devices including the first display device; receive a first operation of a user, the first operation is used to select the first display device from the first list; in response to the first operation, establish a first screen projection connection with the first display device, and save a first correspondence between the identification code of the first NFC tag and the first display device; and initiate a first scan for nearby display devices; receive first scan response messages from the nearby display devices; display, by the terminal device based on the received first scan response messages, a first pop-up box, the first pop-up box includes a first list of the nearby display devices including the first display device; receive a first operation of a user, the first operation is used to select the first display device from the first list; in response to the first operation, establish a first screen projection connection with the first display device, and save a first correspondence between the identification code of the first NFC tag and the first display device; and when the first information is recorded in the terminal device, establish a second screen projection connection with the first display device in accordance with the saved first correspondence between the identification code of the first NFC tag and the first display device.