Qin Zongquan
In 884, when Zhu Xuan's neighbor Zhu Quanzhong the military governor of Xuanwu Circuit came under attack by Qin Zongquan, a former Tang military governor of Fengguo Circuit (奉國, headquartered in modern Zhumadian, Henan), who had turned against Tang and was pillaging the nearby circuits, Zhu Quanzhong sought aid from Zhu Xuan, and Zhu Xuan sent Zhu Jin to aid him. After Zhu Jin repelled Qin's attack, Zhu Quanzhong, in appreciation, honored Zhu Xuan as an older brother.