The Juechen Feather in Delusion Mountain and Sea is a relatively rare and rare material. You can go to the Zhongshan area and defeat any giant beast to get it. You can choose to open the Pixiu Store, and you can buy one in the Pixiu Store every day.
Juechen Feather is one of the important materials for making Kunwu Sword. It is recommended that players hoard this material as much as possible.