Lin Xun did not succumb to the allure of the 'Sacrificial Cocoon'.
Although the equipment of Legend+ level was undoubtedly precious, its cost was to sacrifice a main Shell and to allow the Wet Nurse to gain new life genes. No matter how he calculated, it was not worth it.
The 'Sacrificial Cocoon' might sound tempting, and the other half-mask was also in the hands of the Wet Nurse. This time, only one Shell was required to exchange for the half-mask.
But what about next time? If he wants to assemble the equipment of Legend+ level and upgrade it into mythical-level equipment, does he need to continue to increase the stakes and sacrifice more Shells?
In addition, Lin Xun speculated there might be some restrictions to this damaged Legend+ level equipment. It may only comes into effect when assembled completely.
By then, having already sacrificed one Shell, he could only continue to sacrifice others to exchange for the other half of the mask.