Hours later, as they approached the ogre village visible in the distance, Rimuru remained in his slime form. He didn't want to take the form of a goblin or hobgoblin, a personal preference he had developed after reading some cursed stories in his past.
"Oogway is dead so small breach like this could be overlooked. Its not a huge war crime like poisoning the enemy's food source either so we should be fine. And are you sure you want to let Tai Lung grow until he becomes like Oogway? If we don't kill him not that's what he will become. " the bird said.
That was basically what the situation was. Both of the kings know that if Nanzhao actually surrenders without a fight, there will be three powers against them. Army of Nanzhao, Tai Lung and Lord Shen with his army and weapons.