It was the day of the new emperor's coronation ceremony, the Heavenly Fate Celebration, their National Day.
After the founding emperor of the Heavenly Fate Dynasty, Lu Shang began the nation's prosperity. He designated his birthday as the day of the Heavenly Fate Celebration and worship.
Later on, new emperors that came after would also choose this auspicious day for their coronation ceremony.
Lu Shang had also set a rule that every emperor would be in power for, at most, three thousand years before passing the throne to the next generation.
In addition, the emperor could pass the throne to the next generation at any time according to his wishes. He could retire and cultivate in peace, seeking the Dao and becoming an immortal.
Today was the day of the succession of Emperor Tianyun and the coronation of the new Emperor Hengyun.