How to pass the fourth level of cold knowledge in the Three Kingdoms?

By moving the pillows and stacking all the pillows together, Cao sat back and slept successfully.

To pass the fourth level of cold knowledge of the Three Kingdoms, you need to find the pillow first and move together. First move the pillow under the table on the right to the pink pillow, then move the pillow on the middle table to the blue pillow, and stack the pillows together. Finally, all the pillows piled together can make Cao Cao rest easy and sleep smoothly.