Chou Tou, also known as Zhang Tang, stood as the senior general in the Qin military, bearing the longest active service record among its veteran commanders. He first took up arms at age 15 and served relentlessly for 50 years, fighting across countless campaigns on diverse battlefields. His career stretched back to the reign of King Sho, yet his accomplishments often remained eclipsed by the brilliance of Qin's elite Six Great Generals. Chou Tou nurtured a deep resentment toward these figures due to their exceptional talents, a bitterness shared with his contemporary and friend, General Mou Gou. Stoic and fiercely patriotic, Chou Tou radiated unwavering pride in Qin's might and its symbols, like the formidable Kankoku Pass. He maintained a stern demeanor governed by firm principles, particularly condemning dishonorable warfare tactics. This conviction flared when he expressed profound outrage at facing death by poison rather than honorable combat. Despite his rigid nature, he recognized talent in others, evidenced by his reluctant respect for the unorthodox General Kan Ki. During the Coalition Invasion Arc, Chou Tou received orders to defend Kankoku Pass alongside Mou Gou and Kan Ki. This critical assignment leveraged his defensive expertise and the immense symbolic weight carried by his decades of service – factors deemed vital for holding Qin's final bastion. On the battle's third night, he and Mou Gou reflected on their long careers, reaffirming their commitment to Qin's survival. Confronting the Han army led by Sei Kai, Chou Tou was struck by poisoned projectiles. Afflicted by a toxin granting him three days before a fatal end, he refused passive acceptance. Knowing his time was short, he joined Kan Ki's audacious charge against the Han headquarters. Disguising his troops as Wei soldiers, he shattered enemy defenses, slew Han defense chief Na Kon with a single glaive strike, and ultimately killed Sei Kai. With his final breath, he admonished Sei Kai for underestimating a general's strength and urged Kan Ki to rise as Qin's greatest general. He died moments after this decisive act, Kan Ki preventing his body from collapsing. For this ultimate sacrifice, Qin posthumously elevated him to the rank of Great General. As a commander, Chou Tou possessed exceptional leadership (stat: 90) and tactical intelligence (stat: 88). His physical prowess remained formidable despite his age; he wielded his glaive with lethal efficiency and demonstrated immense endurance by fighting through agonizing poison. His army comprised seasoned veterans whose extensive battlefield experience, dating back to King Sho's reign, forged them into a highly effective force.