They also extend the necks of the women, making them very long.

铜环还可以拉伸女性脖子，让脖子变得细长。

There are variations on the technique of the procedure, but generally these are the steps: The patient is put in a supine position with neck extended.

手术技术各有不同，但通常都是这样的步骤：病人取仰卧位，头后仰。