The Empress was bound to act sooner or later.
Jun Yuyan told Murong Jiu that during the months the Empress was confined, her food had always been laced with "something."
Colorless and tasteless, yet it made the Empress irritable and unable to control herself.
It was not Jun Yuyan who had acted.
Over the years, the Empress had committed so many misdeeds that too many people wanted to strike her when she was down.
The Second Prince had his ankle broken, leaving him crippled and completely out of the succession line; the Empress was also despised by the Emperor and had been confined for many days. This was actually a signal from the Emperor to everyone in the harem.
The Emperor was merely using others to do his dirty work.
How could he elevate Consort Jing if the Empress were not dead?
If he wanted the Third Prince to rightfully become the Crown Prince, he first had to elevate Consort Jing's status.
It must be said, the Emperor indeed had a "deep affection" for Consort Jing.