However, such a process is overly complex and requires a wait of a hundred years. By then, Han Yi will undoubtedly reach the state of Nascent Soul, or even the Spirit Transformation, standing at the peak of the Beidou Region. If there is a channel connecting the two realms, he would already know it by then.
The second method naturally involves using disguise, soul-searching, and soul-alteration. By lurking next to the relatives of these powerful cultivators who have achieved the Spirit Transformation in this world, the information about the channel between the two realms could be naturally discovered, thus unveiling the secrets he needs.
However, though the second method does not require hundreds of years, it entails great difficulty and high risk. A single slip could result in being torn into shreds by an enraged Spirit Transformation expert.