It was none other than the Prince of Ning, who had once traveled to Jiangnan with the Emperor.
The Emperor had worn this very bamboo hat at the time.
The Prince of Ning surely couldn't fail to recognize his own imperial father. He gently closed the window, leaving only a narrow crack, puzzled, "What's going on? Why would Father come to such a place?"
"Could it be to catch the Crown Prince?" the guard suggested.
The Crown Prince was not as meticulous as the Prince of Ning, so it was within reason for the Emperor to notice his actions.
The Prince of Ning slightly shook his head, "No, Father has gone to see that pharmacist from Yan Country."
The guard inquired, baffled, "Why would His Majesty seek out a pharmacist from Yan Country? Is His Majesty not feeling well?"