At that time, the old prince would come out to testify against Shangguan Pu. As the righteous party, that person could be "justifiably" promoted to that position by the commoners without losing a single soldier.
"What a huge game of chess." Shen Yijia frowned. "Then what should we do now?"
Song Jingchen's eyes darkened. "We wait."
That person was waiting for Shangguan Pu to be convicted of treason, and he was waiting for that person to take action.
The emperor was seriously injured. Presumably, it would not be long before the edict to pass down the throne appeared. What better evidence existed in this world compared to a fake imperial edict about succession to the throne?
As Song Jingchen explained, Shen Yijia fell into deep thought.
How did her beautiful husband's head grow? Was the thing in his head different from hers?
Song Jingchen thought that she was analyzing it herself and suddenly said, "Since Your Highness is here, why hide?"