제갈탄
Around the winter of 256, Zhuge Dan found an excuse to entrench himself further in Shouchun and build up his defences. He wrote to the Wei imperial court, claiming that he heard that Eastern Wu forces were planning to attack the Huai River region. He asked for 100,000 troops and permission to build more defensive structures in the area. At the time, as Sima Shi had died in 255, his younger brother Sima Zhao had taken over the reins of power as the regent of Wei. Jia Chong suggested to Sima Zhao to keep a close watch on the generals who were guarding strategic locations throughout the Wei Empire and assess whether they were loyal to him. Sima Zhao heeded his words and sent him to Shouchun to meet Zhuge Dan. Jia Chong told Zhuge Dan, "Many wise men in Luoyang hope to see the Emperor abdicate in favour of a better ruler. You already know this. What do you think?" Zhuge Dan replied sternly, "Aren't you Inspector Jia's son? The State has treated your family generously for generations. How can you betray the State and let it fall into the hands of others? I can't stand this. If there is trouble in Luoyang, I'll die for the State." Jia Chong remained silent. After returning to Luoyang, Jia Chong told Sima Zhao, "Zhuge Dan has high prestige and popularity in Yang Province. If you summon him here and he doesn't obey, it's a small problem. But if you don't summon him, it'll become a big problem." Around the early summer of 257, Sima Zhao issued an order in the imperial court's name, ordering Zhuge Dan to return to Luoyang to serve as Minister of Works () in the central government. While the order ostensibly promoted Zhuge Dan to a prestigious ministerial office (one of the Three Ducal Ministers, in fact), it was actually a move to remove him from power in Shouchun and put him under Sima Zhao's control in Luoyang.