Although no one has succeeded in ascending to immortality in the past hundred years, there indeed were successful cases before, so everyone in the Hundred Streams Sect firmly believed in it.
Another point is that the sacrificial ceremony of the Hundred Streams Sect originated from ancient rites and truly could communicate with spirits and deities. Thus, even if they did not gain the favor of the Mother of Bai Yi, by opening the Gates of the Netherworld, disciples of exceptional talent often received other deities' gifts, resulting in a significant boost in their cultivation.
For every cultivator, this was an opportunity they yearned for in their dreams.
And this was exactly what Jiang Lu needed.
In fact, although his goal was to find his other self through the sacrificial ritual, he actually knew nothing about how to conduct the ritual.
As Zeus had said, "Before, it was always others worshiping me and begging to see me. How the hell would I know what to do in a ritual?"