At the time, the conflict between Su Xin and Jiang Yuanzhen had clearly reached a stalemate, with neither side able to gain the upper hand. Knowing this, Jiang Yuanzhen chose to retreat voluntarily.
However, the message that Jiang Yuanzhen spread was that he was concerned about the greater good and did not want internecine strife within the Human race to weaken their strength, presenting an opportunity to the Demon Race.
As a result of this propaganda, Jiang Yuanzhen's reputation actually improved significantly in Jianghu, garnering applause from many martial artists who were unaware of the true circumstances.
Moreover, Jiang Yuanzhen intentionally exaggerated the strength of the Demon Race. While Su Xin and others had witnessed the strength of the five Demon Kings, which was indeed formidable, they were truly no match for the current Human race.