Background
The political situation in the Central Plains in the first year of Jian'an was extremely unstable. The tyranny of Dong Zhuo, the Coalition Army's campaign against Dong Zhuo, the relocation of the capital to Changan, the turmoil of Li Jue and Guo Si, the eastern return of Emperor Xian — this chain of crises took seven years to hollow out the Han court entirely, so that by the time Emperor Xian's carriage reached Luoyang in 196, the court had no grain, no troops, ministers were destroying one another, and it was said that people had to "leave the palace to glean grain in the fields." Among the warlords, Yuan Shao occupied Jizhou in the north and was the strongest; Yuan Shu was in Huainan, Liu Biao in Jingzhou, Gongsun Zan in Youzhou, Lv Bu in Xuzhou, and Cao Cao had only just pacified Yanzhou and had not yet secured his footing. On the surface, no one gave much weight to the ruined Luoyang court; but in reality every one of them was calculating: to receive the emperor onto one's own territory meant gaining the political capital of "honoring the Son of Heaven," but it also meant bearing the costs of provisioning the court, coordinating the officials, and being watched by all under heaven. The moment Xun Yu presented this counsel was the very instant this calculation was laid on the table [c:17530].
Key Figures
Cao Cao was the decision-maker. He had not been entirely unfamiliar with the strategy of embracing Emperor Xian beforehand — during the Chuping years he had opposed Yuan Shao's proposal to "enthrone a new emperor" and had consistently stood on the side of "Han legitimacy" — but strategically he had not yet made "honoring the Son of Heaven" his highest priority. Xun Yu was the central advisor; as a representative of the Yingchuan gentry, he not only saw the political benefits of receiving the emperor but had a deeper calculation: whether the Yingchuan scholars could find their own place in the new order depended on their ability to shape Cao Cao as a lord who "supported the Han" rather than "replaced the Han." Dong Zhao meanwhile was pushing on a parallel track: through private contacts with Yang Feng, Han Xian, Dong Cheng, and others close to Emperor Xian, he paved a practical operational path for Cao Cao's entry into the capital. These three levels — Cao Cao making the final call, Xun Yu providing the theoretical framework, Dong Zhao handling the operational mechanics — composed the complete decision chain for receiving the emperor. Yuan Shao is the implicit counterpoint: his advisor Ju Shou had raised a similar proposal, but it was shot down by Guo Tu, Chunyu Qiong, and others on the grounds that "honoring the Son of Heaven means being controlled by him," and he missed the same opportunity.
Core Issue
The reason Xun Yu's argument held was that he reframed "honoring the Son of Heaven" as an active political lever rather than a passive burden of provisioning [c:17530]. The first lever was "issuing commands to the lords" — once the emperor was received, all of Cao Cao's military campaigns could be authorized by court decree, and any who opposed would have to bear the moral cost of "defying imperial command." This asymmetry would be Cao Cao's greatest advantage over Yuan Shao at the Battle of Guandu. The second lever was "attracting scholars" — the gentry of Yingchuan, Runan, and Hebei, largely adrift after the Dong Zhuo chaos, would naturally gravitate toward wherever the emperor resided; wherever legitimacy resided, scholars would gather under Cao Cao's banner. The third lever was "weakening opponents" — Yuan Shu later usurped the imperial title precisely because he had failed to control Emperor Xian and could not compete through legitimate means, so he was forced down the extreme path, which in turn gave Cao Cao additional grounds for striking him. This layer of argument is presented only briefly in the Romance's text, but its actual effects underpinned Cao Cao's strategic foundation for the following twenty-plus years.
Political Consequences
The most direct consequence was that six months later Cao Cao relocated the capital to Xu Chang, appointed himself Grand General (later yielding that title to Yuan Shao and taking the title of Minister of Works instead), and formally established the dual-track power structure of "Cao as Chancellor plus Han court." All official decrees, official appointments, and external campaigns were issued in the name of the court; Cao Cao thereby acquired a form of legitimacy uniquely his own — he was not the strongest among the warlords (Yuan Shao was still more powerful at this point), but he was the only one who could "speak on behalf of the Son of Heaven." This legitimacy premium played a decisive role at the Battle of Guandu — many gentry families who might otherwise have remained neutral or swung toward Yuan Shao (such as the Hebei scholars beyond Tian Feng and Ju Shou) at minimum maintained a watching brief because "Cao Cao represents the court." The second consequence was to create a moral dilemma for the anti-Cao warlords: they could either acknowledge the court (which meant acknowledging Cao Cao) or reject the court (which meant placing themselves outside the empire). Yuan Shu chose the second path and was quickly isolated and destroyed; Liu Bei twenty years later established Shuhan and claimed to be "inheriting the Han mandate," which from the opposite direction proved how monopolistic the Honoring the Emperor strategy had been over the discourse of legitimacy.
Counterfactual Analysis
The most worthwhile scenario to explore is what would have happened had Yuan Shao listened to Ju Shou's counsel and preemptively received the emperor. Yuan Shao at the time occupied the most prosperous Jizhou territory and his forces far surpassed Cao Cao's; if he had brought Emperor Xian to Yecheng, Cao Cao would have instantly lost the lever of "honoring the Son of Heaven," been forced back to a corner of Yanzhou, and given the balance of power among the Eastern warlords in their mutual wars, might not have survived 197. But Yuan Shao's hesitation was not accidental — the misgivings of the Hebei advisory faction about "having the emperor at Ye, and being constrained by Han court ritual," were at their core an obsession with family autonomy. This obsession meant that even if Yuan Shao had the lever, he could not wield it; it also shows, in reverse, where Xun Yu's brilliance lay: he not only saw the lever but persuaded Cao Cao to be willing to pay the cost of provisioning the court. Another fork in the road: if Cao Cao had rejected Xun Yu's counsel and continued to expand as the Governor of Yanzhou, then twenty years later the Central Plains would most likely have presented a four-power pattern of "Yuan-Cao dual dominion, Sun-Liu division," and the unification process would have been delayed to the third generation — the early national strength of Caowei, and indeed the rhythms by which Shu and Wu thereafter survived, were all built upon this seemingly unremarkable moment of counsel in the first year of Jian'an.