No matter who survives from the Ancient Era to the new era, the first thing they must do is reincarnate so that they can gain recognition from the new era's cosmic laws.
Even the Heavenly Emperor is no exception.
This also explains why Lu Chen, despite living through so many lifetimes, has never been able to break all the seals of the Reincarnation Stone and find his companions from past lives.
Every time Lu Chen reaches a new era, he must reincarnate, and as a result, his previous life's memories are sealed within the Reincarnation Stone, and his Cultivation State is lost as well.
When Lu Chen's strength and Cultivation State recover enough to bear the memories sealed within the Reincarnation Stone, a new Era Tribulation approaches, causing Lu Chen to reincarnate repeatedly, never able to gather all his past companions or recover his memories.
Instead, the sealed memories accumulate, and the companions increase, creating a vicious cycle.
