Consolidation of authority Third Rebellion of Shouchun During the next few years, Sima Zhao consolidated his authority further, leaving the emperor and empress dowager with little power. He further built up a series of events that were viewed as precipitations to usurpation of the Wei throne. In 256, he had the emperor grant him the privilege of wearing imperial robes, crowns, and boots. He further tested waters by having his close aides hinting to the generals around the empire as to his intentions. In 257, when he sent
Jia Chong to probe
Zhuge Dan's intentions, Zhuge rebuked Jia Chong severely —leading Sima Zhao to summon Zhuge Dan back to the capital under the guise of a promotion. Zhuge Dan refused and started a rebellion, submitting himself to
Eastern Wu for protection. Sima Zhao advanced quickly on Zhuge Dan's stronghold of
Shouchun and surrounded it, eventually capturing the city in 258 after cutting off any hope of an Eastern Wu rescue, killing Zhuge Dan and his family, although he treated many of those involved, such as the common citizens, and most notably the Wu soldiers who had been sent as reinforcements, with great magnanimity, despite being advised to punish the citizens and kill all the soldiers, to which he retorted: "The ancients in using troops, preserving the state is best, so kill the leaders and nothing more. Should the Wú soldiers escape and flee back, then they can report the greatness of the central states." This benevolence managed to cast the Sima family in a more, and much-needed, positive light amongst the populace. After Zhuge Dan's death, there was no one who dared to oppose Sima Zhao further for the next few years. In 258, he would force the emperor to offer him the
Nine Bestowments, state chancellorship, and the title of Duke of Jin—a step that put him closer to usurpation—and then publicly declined them nine times.
Death of Cao Mao and complete control of the Wei government In May 260, Sima Zhao again forced
Cao Mao to issue an edict granting him the Nine Bestowments and the promotions, which he then declined again, but which drew Cao Mao's ire. He gathered his associates
Wang Shen,
Wang Jing, and
Wang Ye and told them that, while he knew the chances of success were slight, he was going to act against Sima Zhao. He took lead of the imperial guards, armed himself with a sword, and set out toward Sima Zhao's mansion. Sima Zhao's brother
Sima Zhou tried to resist, but after Cao Mao's attendants yelled loudly, Sima Zhou's forces deserted.
Jia Chong then arrived and intercepted the imperial guards. Cao Mao fought personally, and Jia Chong's troops, not daring to attack the emperor, were also deserting. One of the officers under Jia Chong's command, Cheng Ji (成濟), after asking Jia what to do and was told by Jia to defend the Sima power regardless of the consequences, took a spear and killed Cao Mao with it. This left Sima Zhao thoroughly vexed. After Cao Mao's death, public sentiments called for Jia Chong's death, but what Sima Zhao did first was to force Empress Dowager Guo to posthumously demote Cao Mao to common citizen status and order that he be buried as such. He also executed Wang Jing and his family. The next day, after pleas from his uncle
Sima Fu, Sima Zhao instead had Empress Dowager Guo order that Cao Mao be promoted back to a duke and buried with the ceremonies of an imperial prince. Sima Zhao then summoned
Cao Huan, the Duke of Changdao, and a grandson of Cao Cao, to the capital to become the emperor; by now, Empress Dowager Guo was powerless to speak further. In the midst of these events, Sima Zhao went on to decline the Nine Bestowments and the promotions towards state chancellorship and the title of Duke of Jin. Some days later, Sima Zhao publicly accused Cheng Ji and his brothers of treason and had them and their family executed to appease public sentiment while sparing Jia Chong. No one dared to act against Sima Zhao even in the aftermaths of the emperor's death, however, for Sima Zhao was effectively the imperial authority by this point. On 27 June, Cao Huan entered Luoyang and became emperor. Two days later, Sima Zhao forced Cao Huan to confer upon him the Nine Bestowments as well as the promotions towards state chancellorship and the title of Duke of Jin, which he earnestly declined, as well as another time in October.
Conquest of Shu In 262, aggravated by Jiang Wei's incessant border attacks, Sima Zhao considered hiring assassins to murder Jiang Wei, but this plan was opposed by his advisor,
Xun Xu. Zhong Hui himself believed that Jiang Wei had worn out his troops and that it would be an appropriate time to try to destroy Shu once and for all. Sima Zhao put Zhong Hui,
Zhuge Xu, and
Deng Ai in charge of the invasion forces (even though the latter initially opposed the campaign), and they set out in autumn 263. Zhong Hui, Zhuge Xu, and Deng Ai faced little opposition from Shu's forces, whose strategy was to draw the Wei forces in and then close on them—a strategy that backfired, as the Wei forces, much quicker than expected, leapt past Shu border cities and immediately onto the important
Yang'an Pass (陽安關; in present-day
Hanzhong,
Shaanxi), capturing it. Zhuge Xu was eventually expelled and sent back as a prisoner, though, as Deng Ai wanted to merge his own troops with Zhuge Xu's, whereas Zhuge Xu did not deviate from the original plan; he met up with Zhong Hui, who wanted to monopolize on the military situation, and so sent an edict mentioning the cowardice of Zhuge Xu, after which the latter's troops were merged with Zhong Hui's. Jiang Wei was able to regroup and block off the Wei forces from further advances, until Deng Ai led his troops over a treacherous mountain pass, descending on
Jiangyou, defeating
Zhuge Zhan and heading directly for the Shu capital,
Chengdu. Surprised by Deng Ai's quick advances and believing that Jiang Wei would be unable to return fast enough to defend the capital against Deng Ai, the Shu emperor,
Liu Shan, surrendered to Wei. Earlier this year, in the spring of 263, Sima Zhao had again declined the Nine Bestowments and the promotions, but during the campaign, in light of the recent successes, on 9 December 263, the emperor, Cao Huan, bestowed upon Sima Zhao the title of the Duke of Jin, the Nine Bestowments, and the position of Chancellor of the State, which Sima Zhao finally accepted.
Zhong Hui's Rebellion Another turmoil quickly came after Shu's destruction, however. Deng Ai, proud of his achievements, became arrogant in his correspondence with Sima Zhao, drawing Sima Zhao's suspicion. Zhong Hui, who had plans to rebel himself, quickly forged letters that further damaged the relations between Sima Zhao and Deng Ai beyond repair, and Sima Zhao ordered Zhong Hui to arrest Deng Ai, although he himself, wary of Zhong Hui, nevertheless arrived with his own forces and stationed at
Chang'an. Zhong Hui did so, seizing Deng Ai's troops and merging them with his own, and then, with Jiang Wei as his assistant (but with Jiang Wei's actual intentions being to eventually kill Zhong Hui and restore Shu), declared a rebellion in 264, but his troops rebelled against him and killed both him and Jiang Wei, with Sima Zhao going on to bestow an amnesty upon all in Shu. ==Death==