The matter of King Jie requires careful planning and execution without arousing suspicion.
Pei Ji'an's plan was set for a period of three months, which is sufficient to let King Jie feel the effects of a terminal illness and then make the corresponding plans.
Too fast or too slow, neither would work.
This method has risks; if successful, it would be a great achievement and everything would be worry-free.
If it fails, it will be difficult to deceive King Jie again in the future.
That's why they never considered using this method before, because as long as the Emperor wanted to know something they still needed to find a way to prolong King Jie's life.
Now, with the situation developing to this point and the enemies making proactive moves, they had to respond or else they would be too passive.
And the outcome of being passive is often not very good.
