The long cast sabiki gimmick is equipped with a float, you can freely set the shelf. You can adjust the under float according to the depth of water you are the fish that aim.
Lawrence Zhang He didn't specify what rod he was using in this video, besides, the video wasn't about the rod/reel but about Sabiki rig. The only thing he mentioned about the rod was like he's showing how to set up Nage-sabiki or casting sabiki which enable you to cast sabiki even with a short rod he was to use...said it was about 1.5m/6ft in length.