It was one of the slow-acting poisons made by the junior disciples. Because it had been inside Oldest Miss Ying's mother's body for so long, it became almost impossible to flush out. However, since it was Su Yue, the miracle doctor and the maker of the poison, then it would be a piece of cake for her to handle.
Looking at Oldest Miss Ying who was looking flabbergasted, Ah Yue Fan forced a smile even though his mood was terrible at the moment.
From the way the lady sitting inside the carriage carried herself, plus her bearing, Oldest Miss Ying knew that she wasn't simple and mustn't be trifled with. Secondly, she must have a way to cure her mother. So she turned to Su Yue and placed a hand on the other and curtsied.
"This lady accepts your condition, but please give me the antidote so I can return home and feed it to my mother. In return, I shall let my most loyal maid go with you. With her by your side, no one will doubt your disguise."