Shou Bun Kun, titled Lord Chang Wen, holds the esteemed position of Chancellor of the Left in Qin’s government, standing as a cornerstone of loyalty to King Ei Sei. Officially addressed by his rarely used birth name, Mi Dian, his career spans military prowess and political mastery. A veteran of King Sho’s reign, he shifted from commanding elite 100-man units on perilous missions to shaping state policy, leveraging battlefield-honed strategic insight and administrative precision to ascend the ranks. Renowned for frontline combat with glaives, bows, and masterful swordsmanship—skills he imparted to a young Ei Sei—his legacy as a military innovator inspired specialized units across Qin. During the Coalition Invasion, his leadership anchored Sai’s west wall defense, steadfastly repelling assaults until reinforcements secured victory. Politically, he transformed Qin’s stability by championing engineer Tei Koku’s flood-control initiatives in 243 BC, resolving chronic crises dismissed by predecessors. Appointed Chancellor of the Left in 239 BC, he fortified Ei Sei’s reign against rival factions like Ryo Fui, orchestrating the suppression of the Ai Rebellion alongside Shou Hei Kun. His strategic vision guided Qin through the Western Zhao Invasion and Gyou campaign as one of four masterminds in tactical command, while his legal frameworks laid groundwork for unification. Mentor and confidant to Ei Sei since the king’s youth, their bond transcends duty, revealed in moments like his emotional response to news of Ei Sei’s heir. Though historical records scantily detail his influence, expanded narratives portray him as a multifaceted architect of Qin’s ambitions, merging martial rigor with governance. Quantified across arcs, his evolving capabilities—strength, leadership, intelligence, political acumen—range from 75 to 96, marking his transition from warrior to statesman. Aging yet indispensable, he remains a linchpin in Qin’s unification, bridging martial tradition and bureaucratic ingenuity.