Cheng Er and Wen Yuan are at odds with each other, and tensions reach a climax when Cheng Er physically confronts Wen Yuan. However, being bigger and older, Wen Yuan quickly gains control of the situation. He is impressed that Cheng Er has more courage than his father in confronting him. Yan Er steps in, aiming to de-escalate the situation and appease Wen Yuan. Yan Er is summoned to see the emperor, who insinuates that Wen Yuan tried to harm him and cannot be trusted. It is revealed that the emperor intentionally let his sores worsen to appear weak, indicating that he is not as simple or feeble as we are led to believe. (Source: Mesutton at MyDramaList)