Qin Guan was angry at the funeral hall when he learned that the emperor ordered King Rui to be buried the city the next day.Yan Chi asked Qin Wan to conduct an autopsy on King Rui's body to find out the truth.The autopsy results showed that King Rui was stabbed to death by a special weapon - the Four-ring Arrow. This weapon was only available to the Rong enemy. However, the strange scars on King Rui's body made them suspect that King Rui's death might be because insiders leaked military secrets.

The empress dowager was in great pain because of the loss of her son. Emperor Yan Huai tried his best to comfort her, but the empress dowager was determined to go and see her son, but the emperor had no choice but to agree.In the court, the emperor decided to let King Cheng Yanqi and Li Muyun be responsible for investigating the cause of Song Xiwen's death, which made Prince Yan Che feel uneasy.Yan Chi asked the Empress Dowager to marry Qin Guan, hoping to comfort his father's spirit in heaven. The Empress Dowager agreed to his request.
The people from the Chengwang Mansion came to the Zhongyong Marquis' Mansion and proposed to take Qin Xiang as their concubine. Qin Xiang publicly admitted that he had already had an intimate relationship with King Cheng and was willing to become his concubine, which aroused Qin Shu's anger and Qin Xiang was kicked out of the house.Yan Chi discovered his deep attachment and expectation for himself in the relics, and at the same time realized the grievances and pains his father had suffered.Yan Chi and Qin Wan suspect that Yan Lin's death was related to Jiang Heying of Shenji Camp, and it might be the conspiracy of the emperor or the prince.