Tie a knot with two lines.

3. Pull up the B line.

4. Line A rotates clockwise.

5. Turn line B clockwise and choose a circle between you and line A..

6. Turn line A clockwise through line B and through the center hole.

7. Turn line B clockwise through line A and through the center hole.

8. Take it off your hand, pull both sides of the line and pull the two rings of the CD at the same time.

9. Plastic surgery is completed.