I mostly use my TV as a casting display: find a video on my phone and throw it to the big screen — quicker than fiddling with a remote.
Casting is simple: put phone and TV on the same Wi-Fi, open the video in any platform's player, tap the small TV button (top-right), and pick XiaoYou Cast (小柚投屏). The app is free with no ads; after casting you can adjust quality and progress from your phone, and you don't have to stay on the player — use your phone for other things without interrupting playback.
Beyond movies, XiaoYou Cast has playful modes: cast mini-games like a wooden-fish toy (real wooden-fish/bell/bowl sounds — oddly satisfying), dynamic wallpapers like a fish tank or campfire, plus weather and an eye-test.