Moreover, Zhang Yanhang had just doubled his defensive power, and this neck potential activation device isn't some divine weapon, so it might not be able to penetrate his surface defense layer. Therefore, a gentler method should be used to apply it.
If it were in the past, he would definitely have chosen to use alchemy to directly make a hole in the back of his neck and then place the neck potential activation device inside.
But now, he's more inclined to use the Transformation Technique to make a hole in his back neck, as the Transformation Technique is ultimately more professional in this regard, and indeed much more convenient than alchemy, which is more of a side job.
Thus, accompanied by a surge of blood and flesh, Zhang Yanhang quickly used the Transformation Technique to make a hole in the shape of the neck potential activation device in his back neck, which should just fit the device.
