秦悼太子 / Qin Daotaizi

秦悼太子 / Qin Daotaizi appears in 《资治通鉴·周纪》89丨秦王竟被他怼“妈宝男”？ through the notice that he was held as a Qin hostage in 魏国 and died there in 267 BCE. The episode says he had been sent to Wei in 269 BCE and was later returned for burial at Zhiyang.

The page is source-scoped because the episode uses him less as an independent biography than as a strategic puzzle. If 秦昭襄王 already had a crown prince in Wei, Fan Ju’s advice to attack Han and Wei under 远交近攻 raises the question of how much the king valued that hostage’s safety.

The host cautiously suggests that the crown prince may not have been favored, especially because 安国君柱 / 秦孝文王 is later established as crown prince. The wiki records that as an inference from the episode, not as a settled fact.

Connections

• 秦昭襄王 - father and ruler whose policy creates the puzzle.
• 魏国 - hostage destination and place of death.
• 安国君柱 / 秦孝文王 - later replacement crown prince named by the episode.
• 质子外交破裂 - wider hostage-diplomacy frame extended by this case.
• 远交近攻 - policy whose attack sequence makes the hostage situation politically charged.