Lu Xingyi is Lu Ye's second uncle, known as the 'Profound Furnace Sword Master', a Mortal Martial Ancestor of the Profound Furnace Realm. He was the pillar of the Lu Family, single-handedly raising its rank from third-rate to fourth-rank. He mysteriously disappeared after the battle at Greedy Wolf Pass, and his disappearance is linked to the battle's secrets. His life-saving grace to Xue Baisong is mentioned, and he is deeply respected by Qin Wushang.