Methods similar to using Primordial Spirit Possession to enter another person's body, thereby controlling it and achieving what Daoists called "body snatching."
In truth, any True Return Realm expert could accomplish this.
The prerequisite was that the possessed person's body had to be compatible with one's own primordial spirit—in other words, their essence, qi, and spirit had to become one.
Furthermore, the possessed person's mental strength could not be too great. Otherwise, unless the target willingly surrendered their body, the possessor would find it difficult to succeed.
Among the people Jiang Dali had encountered, Xie Tiao's primordial spirit demonic seed residing within Pang Ban's body and the Scripture King's primordial spirit residing in and controlling Purple Clad Boss both counted as body snatching.
However, neither had completely driven out the possessed person's spiritual consciousness, so neither was a complete possession.
As for possessing players, the Comprehensive Martial World login devices developed by the Four Great Clans protected players' spiritual consciousness. Even True Return Realm experts found it difficult to successfully possess a player.
Before their primordial spirits could invade, a player's spiritual consciousness would be forcibly logged off under the protection of the powerful safeguard mechanism.
Even if a True Return Realm expert's primordial spirit remained inside a player's body, they could not reach the stage where essence, qi, and spirit became one. Players could log in at any time, and even if they were forcibly logged off again by the safeguard mechanism, it would still effectively interfere with and obstruct the fusion of the expert's primordial spirit and the body.
Over time, if the True Return Realm expert's primordial spirit remained unable to merge with the player's body, it would wither, even risking the dissipation of the primordial spirit.
Jiang Dali naturally knew all this, which was why he