Those Days When My Good Brother and I Were in the World of Cultivating Immortals

In 2025, my good brother and I were sent to the world of immortality by a teleportation vehicle from another world that suddenly appeared. I was taken away by a man from the devil's path, and he became a man of the righteous path. We both have a common system, but the task of this system is either he betrays me in exchange for resources, or I betray him? How can that be done? You have to pay more!