Disclosed is a method for preparing hematite iron oxide having various nanostructures, including: preparing a mixture solution by adding iron chloride and caffeine to a solvent and magnetically stirring; and performing hydrothermal synthesis, wherein the solvent is selected from water, ethanol, propanol and methanol. A lifter is mounted to one side of the base frame to gradually lift the rear end of the movable frame, so that the toilet seat support and the toilet seat are forward inclined to gradually move a user sitting on the toilet seat into an upstanding position. The other edges of the plurality of generally triangular-shaped baffles are coupled to separate generally rectangular-shaped baffles that are oriented at a 45-degree angle from the generally triangular-shaped baffle. The motion sensing unit is capable of detecting a shaking motion imparted to the display device by a user.