Ziwei Palace, the Ten Kings of Hell gathered to request an audience with the supreme authority.
According to the script, they were supposed to report the chaos in the Netherworld to the duty-serving Heaven Empress at dawn during the morning court at the Golden Palace, Cloud Palace and Lingxiao Palace.
But the impulsive monkey who altered the Book of Life and Death was the reincarnation of the Northern Yin Fengdu Emperor, who is also the boss of the Ten Kings of Hell; if it's this person, whether the alteration of the Book of Life and Death was warranted deserves careful consideration.
A well-known truth is, theoretically, it's possible, but practically, it's absolutely forbidden; in principle, it's not allowed, but practically, it's entirely doable.
Moreover, when the Ten Kings of Hell received the script, no one had told them the monkey causing havoc in the Netherworld was the reincarnation of the Northern Yin Fengdu Emperor, their boss.