Zhang Tang, known as Chou Tou, served as a senior Qin general with the longest active tenure among the kingdom's veteran commanders. Beginning his military career at age 15, he served continuously for 50 years, making him 65 during the Coalition Invasion. His weathered appearance reflected his age and battlefield experience, featuring gray hair, a long mustache, beard, a stern expression, and general's armor. A deeply patriotic officer, he held unshakable pride in his role and reacted fiercely to any perceived disrespect toward Qin's sovereignty. He openly admired symbols of Qin's strength, particularly Kankoku Pass, which he defended during the Coalition War. Maintaining a serious demeanor, he despised dishonorable tactics, exemplified by his outrage at General Sei Kai's use of poison. Despite his sternness, he respected proven talent, urging Kan Ki in their final interaction to rise as Qin's greatest general. Assigned to defend Kankoku Pass alongside Generals Mou Gou and Kan Ki during the Coalition Invasion, he discussed the Coalition Army's movements with Mou Gou on the battle's third night. They reflected on their shared past as overlooked officers during the era of Qin's Six Great Generals, acknowledging mutual resentment yet finding solace in outliving those elites to fulfill a critical defense requiring the "weight" of experience. The next day, a poisoned arrow from Sei Kai's forces struck him. Though initially unharmed, the poison proved fatal within three days. Refusing passive death, he spearheaded a final charge against the Han army's headquarters to eliminate Sei Kai. Before departing, he saluted his soldiers, honoring their long service together and apologizing for choosing to die in combat, not from poison. During the assault, he broke enemy defenses, slew defense chief Na Kon with a single strike, and confronted the fleeing Sei Kai. He denounced Sei Kai's cowardice and reliance on underhanded methods, declaring a true commander never flees. After cutting down Sei Kai, he succumbed to the poison moments later, his body prevented from falling by Kan Ki. He was posthumously promoted to Great General. His extensive battlefield experience made him a formidable commander. He demonstrated glaive proficiency, breaking enemy lines and slaying officers with single strikes. His leadership inspired unwavering loyalty, with soldiers following him into near-suicidal engagements. Tactically adaptable, he countered sophisticated siege equipment like Wei's towers by shifting from defense to ground battle. His greatest endurance feat occurred during his final battle, where sheer willpower defied the poison long enough to achieve his objective. Notable quotes emphasized his values: his defiant declaration to the Wei Army about Kankoku Pass's invincibility and his final rebuke of Sei Kai's dishonor. His last words to Kan Ki underscored prioritizing talent over personal affinity, entrusting Qin's future to the younger general.