Ji Fa ultimately didn't last long. In the original timeline, he survived for three years after the fall of Shang before passing away; this time, he lasted only seven days.
Primarily, it was due to the Yin Shang dynasty's Qi Fortune being stronger than in the previous life, and Yin Shou, who was overwhelmingly favored by the people's hearts, being extraordinarily bold. The Heavenly Dao wouldn't bear the immense karma of forcing an end to this.
Neither would Yuanshi Tianzun, the one who orchestrated the Rise of Zhou and Fall of Shang.
In the end, the karma could only be shared between Jiang Ziya, the Heavenly Mandate person of the Chan Sect, and Ji Fa, the direct agent for Shang's demise.
Old Jiang, for his part, was deeply blessed and had a profound connection with the Chan Sect, coupled with his strong ties to Yin Shou. He might simply suffer a few days of bad luck in the end.
