Mmmm, me thinks its by second prince...
Me thinks it was a mix of tea and wine~
In the novel it's the empress who did it she mix it with his wine
2nd prince is long gone from the picture this one is the empress herself, If the emperor died the empress will have the power to appoint the crown prince of her choosing
No, isnt the ML the second prince? (Age wise)
And with the first prince in jail for treason right?
Guess what Mr. Emperor you're being poisoned