清华简《系年》 / Qinghua Bamboo Slips Xinian

清华简《系年》 / Qinghua Bamboo Slips Xinian appears in 《资治通鉴·周纪》07丨两起刺杀（1） as supplementary evidence for events that 《资治通鉴》 leaves terse. The episode says 司马光 does not explain why 楚国 besieged 郑国 or why Zheng killed 子阳, then turns to Xinian to reconstruct a plausible background.

The source uses Xinian as an evidence-bound supplement rather than a free license to invent missing motives. Its wiki role is to connect excavated texts with Historical Detective Reasoning and Classic Reading Complexity.

Connections

• 《资治通鉴》 - chronicle whose gap the source discusses.
• 司马光 - compiler associated with the terse record.
• 郑国, 楚国, and 子阳 - event cluster supplemented by the text.
• Historical Detective Reasoning and Classic Reading Complexity - method frames.