In "The Romance of the Three Kingdoms", Xu Rong is a third-rate general who was handed over to Xiahou Dun several times and killed by his horse. He has no honorific title.
In "The Romance of the Three Kingdoms", Xu Rong only appeared for a few hundred words and was killed by Xiahou Dun. He was a typical supporting role and had no honorific title.
Chapter 6 of "Romance of the Three Kingdoms": Dong Zhuo commits murder at the Burning Gold Tower, and Sun Jian breaks the promise by hiding the jade seal
—— Let’s say that Dong Zhuo traveled to Xingyang, and the prefect Xu Rong went out to meet him. Li Ru said: "The prime minister has recently abandoned Luoyang to guard against pursuing troops. You can teach Xu Rong to ambush his army beside the mountain dock outside Xingyang City. If there are troops chasing after him, let him go. Wait for me to defeat him here, and then intercept and kill him." So that those who came after him would not dare to pursue him again." Zhuo followed his plan and ordered Lu Bu to lead his elite troops to contain the enemy. ... (Lv) Bu led his cavalry to cover up the enemy, and Cao's army was defeated. He looked back at Xingyang and left. Walking to the foot of a barren mountain, it was about the second watch, and the moon was as bright as day. The remaining soldiers had just been gathered together, and they were about to bury the pot and make rice, when they heard shouts from all around, and Xu Rong's ambush troops came out. Cao Cao hurriedly rode his horse and ran away. When he met Xu Rong, he turned around and left. Rong took the arrow and shot Cao in the shoulder. ...just take the water and walk away. Until daybreak, we walked for more than thirty miles, resting briefly under a hillock. Suddenly, a group of people and horses came from where the shouts started: it was Xu Rong who crossed the river from upstream to pursue them. When Cao was panicking, he saw Xiahou Dun and Xia Houyuan flying towards him with dozens of horses, shouting: "Xu Rong has not hurt my lord!" Xu Rong then rushed to Xiahou Dun, who came to greet him with his gun drawn. After handing over the horses, he stabbed Xu Rong under the horse and killed the remaining soldiers.