1. Adjust the six sided center block to combine 12 edges, and you can also convert the restored fourth order cube into a third order cube.
2. Turn the four grids of the center, starting from the four on one side, and use the rotation to connect and transfer the two of the same color.
3. Combine the wedges, the formula is MD RF UR F MD The matching mode is parallel pairing.
4. In case of special circumstances, turn the middle left and right circles together with the left and right outer circles.
5. Adjust the six sided center block of the cube. Since the fourth order cube has no fixed center block, remember the six sided color when turning.