In the Imperial Palace, in the Imperial study.
The Emperor took the letter from the secret guard. After reading it, his face was first filled with shock. His eyes burst out with an intense curiosity and excitement that could not be hidden. Then, his face was filled with confusion. Finally, that excited face became calm and deep in thought.
In the end, he picked up the pen, and with two strokes, he handed it to the leader of the secret guards and instructed him, "An Yi, you personally deliver the letter. You must personally deliver it to Jiang Zhennan's hands. Also, help me monitor that small county well. If there's anything, report it immediately!"
"Yes, Your Majesty!" The leader of the hidden guards in the shadows had no expression on his face. He only followed the emperor's orders respectfully.
Duke Zhengguo's mansion, in a desolate courtyard.