Luzhu explained the matter tirelessly.
It turned out that back then, Grand Consort Yu had bribed Luying to help her frame Empress Chi.
At first, Luying didn't agree. Unexpectedly, her biological brother accidentally killed someone and was sent to prison.
It was unknown where Grand Consort Yu got the news from, but she grasped this point and threatened and tempted Luying.
She even told Luying, "Empress Chi is the most impartial. If she finds out, she won't save your brother either. However, I can save your brother as long as you agree to cooperate with me."
Luying was caught in a dilemma, but in the end, she agreed to Grand Consort Yu's request.
She got Luying to add a herb called "Arisaema heterophyllum" into the warm soup that Empress Chi gave Gu Yihan every day.
The effect of Arisaema heterophyllum was originally to remove the wind, stop the convulsions, disperse knots, and reduce swelling.