1, you can generally use the network TV set built-in network video playback software to search for, play square dance video; method: turn on the TV, enter the network TV interface, find the network video playback software, press the confirmation button to open the software, and then select the search box, press the confirmation button, enter square dance, start searching; find the relevant video, select one of the video, press the confirmation button to start playing. 2, if the network TV does not have a built-in network video playback software, you can install a network video software through the USB flash drive to the TV set to use. After you find a relevant video, select one of the videos and press the confirmation button to start playing it. 2. If there is no built-in network video playback software in the network TV set, you can install a network video software to the TV set through a USB flash drive to use it. Method: Put the software installation package on the USB flash drive, insert it into the USB port of the TV set, then enter the file management interface of the TV set, find the external storage device, open and find the installation package of the network video software, press the confirmation button to open and install it on the TV set. After the installation is complete, you can re-search for Square Dance and watch it on-demand as described above.