Only after ascending to the Immortal Realm did Xu Changfeng understand: ascension was a scam, and the Human Realm was a breeding ground for the Spirit Realm.
The rulers of the Spirit Realm, the Nine Heavens Immortal Court, discovered that everyone who ascended from the lower realm carried a trace of Heavenly Mandate Qi, an essence imprint bestowed on ascenders by the Heavenly Dao of the Human Realm. It was the finest nourishment for refining Dao Fruits and extending immortal lifespans.
Xu Changfeng killed the harvest emissary in a counterattack, seized the Reincarnation Dao Seed, and freed the Spirit-Nurturing Pool, making himself a wanted fugitive throughout the Spirit Realm.
He fell amid a siege by the Three Venerables of the Spirit Realm and powerful cultivators from every quarter.
Xu Changfeng chose to sacrifice his own Dao body to tear open the Spirit Realm's barrier. His remnant soul, wrapped around the System and the Reincarnation Dao Seed, fell back into the Human Realm.
At the final moment of his life, his remnant soul merged with the auxiliary cultivation System he had brought with him when he transmigrated, and the Reincarnation Dao Seed. Together, they became the Ancestral Shrine.