"Mu Jian."
"Oh, the commander of the Crown Prince's Right Imperial Guards." Jiang Ruobai had a thorough grasp of the imperial court and immediately remembered the man with the hooked nose and peach blossom eyes who often accompanied the Crown Prince.
He was highly skilled in martial arts and seldom spoke.
A formidable figure.
Jiang Ning held up a letter, "This one, found in Denghua's possession, which you should know about since Uncle must have told you. As for this other one, I just tricked it out of Mu Jian's hands."
Jiang Ruobai pondered for a moment before suddenly realizing, "Huh, could it be that the Crown Prince poisoned Concubine Jin?"
"Father, you've finally caught on." Jiang Ning folded up the letter, put it back in the envelope, and carefully stored it away, "This is precisely what's been puzzling me, and I was just about to ask you for advice when you conveniently showed up. Speaking of which, how did His Majesty allow you to come to me?"