苏代 / Su Dai
苏代 / Su Dai appears in 《资治通鉴·周纪》29丨苏秦励志爽文：知识改变命运 as one of 苏秦’s famous brothers. The episode uses him with 苏厉 to show that Su Qin’s career belongs not only to an individual rise narrative but also to a broader Warring States family of persuaders.
The source does not develop Su Dai’s independent diplomacy. His role here is connective: he widens Su Qin’s story from personal self-study into a family branch inside 纵横家外交.
《资治通鉴·周纪》47丨燕王哙的理想主义 gives Su Dai an earlier independent role inside 燕国’s collapse. Linked by marriage to 子之, he answers 燕王哙’s question about Qi by saying Qi cannot dominate because its ruler does not trust 陈聊. That answer reads Yan Wang Kuai’s insecurity and pushes him to prove trust in Zi Zhi, making Su Dai part of the source’s 揣摩 chain before 鹿毛寿 finishes the transfer.
《资治通鉴·周纪》56丨 瞧瞧两千多年前啥是大丈夫 mentions Su Dai again in the wider list of persuaders who followed the fame of 张仪, 苏秦, and 犀首公孙衍. The episode still does not give him an independent story, but it places him in a broader late-Warring-States fashion for travel, debate, and tactical persuasion.
《资治通鉴·周纪》83丨诸侯摆烂竟成了经典计中计？ gives Su Dai an independent remonstrance scene after 魏国’s defeat at 华阳之战. He warns 魏安釐王 that 段干子’s proposal to cede land to Qin serves Duan Ganzi’s ambition and 秦国’s appetite at the same time. His “抱薪救火” metaphor becomes 抱薪救火式割地求和, though the episode also notes that Su Dai diagnoses the problem without giving Wei a workable alternative.
《资治通鉴·周纪》68丨惊叹宋康王荒淫无度的狗血历史（1） gives Su Dai a major anti-Qin intervention before the Song campaign. Sent from 燕昭王’s interest in preventing a Qin-Qi-led attack on 赵国, he tells 齐湣王 to treat 秦昭襄王’s East/West emperor proposal as a trap: accept verbally if needed, wait for reaction, then drop the title and focus on 宋国. His method turns status temptation into 东西二帝试探 and preserves Qi’s freedom to pursue material gain without sharing Qin’s legitimacy risk.
《资治通鉴·周纪》95丨长平之战后秦国为什么没有灭了赵国（1） gives Su Dai another major intervention, this time on behalf of frightened 韩国 and 魏国 after the 长平之战. He visits 范雎 with gifts and does not simply beg 秦国 to spare 赵国; he argues that if 白起 destroys Zhao and takes 邯郸, Bai Qi’s merit could elevate him above Fan Ju.
This makes Su Dai the source case for 位阶焦虑式说服. He also supplies a state-interest argument: even if Qin occupies Zhao land, the population may flee into other states rather than become Qin subjects. The episode therefore shows Su Dai using both personal rank anxiety and practical conquest economics to push Fan Ju toward a pause.
Connections
- 苏秦 and 苏厉 - brothers named by the source.
- 燕王哙, 子之, 鹿毛寿, and 陈聊 - Zhouji 47 Yan power-transfer branch.
- 张仪, 犀首公孙衍, 周最, and 楼缓 - Zhouji 56 wider persuader list.
- 纵横家外交 - diplomatic field the family represents.
- 战国时期 - historical setting.
- 魏安釐王, 段干子, 华阳之战, and 抱薪救火式割地求和 - Zhouji 83 land-for-peace warning.
- 齐湣王, 秦昭襄王, 燕昭王, 宋国, and 东西二帝试探 - Zhouji 68 part 1 title-risk advice and anti-Song strategic redirection.
- 范雎, 白起, 韩国, 魏国, 赵国, and 位阶焦虑式说服 - Zhouji 95 lobbying that turns Qin’s possible destruction of Zhao into Fan Ju’s personal status risk.