Jiang Yi did have his own reasons for doing this!
On the one hand, he could not afford for Wu Que'er to expose herself. This was the only way he could milk the full potential of this spy. Who knew if the Saint Priest or Saint Emperor had eyes planted around Wu Que'er? If Wu Que'er acted suspiciously with these foreigners, these eyes would likely send reports back to raise suspicions of the Saint Priest and Saint Emperor. Then, they were bound to get into trouble after entering Saint Emperor City.
That was why the Buddha Emperor and the others had to be taken down. This Ghost Elixir was a mysterious elixir that could seal one's essence force. Wu Que'er naturally had the antidote to this medicine. He could give these people their battle power back at any time that she wanted. She just had to lock them up first.
