After Melina and I were escorted to the stables, where the other slaves were waiting for their owners to leave the meeting, we waited for a few minutes for all of them to arrive.
We knew that the nobles' meeting had begun since Melina and I could listen to the whole thing thanks to the enchantment we left on Mei Ling's brooch, and that was the signal for us to start getting all these people out.
There was only one guard inside watching us, so I approached him in a friendly manner to confuse him for a moment before giving him a chop in the back of his neck, leaving him unconscious.
Some of the enslaved villagers gasped after the guard went down, but Melina quickly put their minds at ease as she softly told them that they would be freed that night.
Once we teleported all of the people inside the stables to Yuandu, including the unconscious guard, only Melina and I remained inside the stables.