As for what else was inside the Black Heisha Palace, Mo Jiuli didn't have time to investigate, as she had already given the antidote to her own people! As for the people of the Black Heisha Palace, she didn't intend to let a single one go...
However, in order not to be discovered by others, the poison she administered was extremely potent but would not take effect immediately, taking about an hour before it would...
This was also because Di Ming had told Mo Jiuli in advance that when the people of Black Heisha Palace were generally free, they would seclude themselves from the world to cultivate and were distributed in Black Heisha Palace's various corners...
So, Mo Jiuli specifically prepared this batch of poison for this trip to Black Heisha Palace! As for its effectiveness, she didn't know yet...