The eggs that Kuan had were not fertilized, and the delicate pale green hues were extremely appealing. He bought ten and carved them after returning to Taiwan. The membrane in this kind of eagle's egg is thicker than in most eggs so he applied the "leave the membrane" carving method to them.
關椿邁拿到的鵰蛋是未受精卵，淡淡的嫩綠色相當吸引人，他向當地人買了十顆，回國雕刻後發現，這種鵰蛋的蛋膜比一般的蛋膜還厚，於是選擇留膜刻法完成作品。