2, boiled and put in water to cool.

3, take out the cocoon and put it in the water with the help of the force of the water to pull the cocoon.

4, and then put the ripped silk on the small bamboo ring.

5. Take another large bamboo ring, remove the silk from the small ring and put it on the large ring.

6. Then take off the silk and dry it.

7. Cut the dried silk and pull it apart with force.