Is “Double-spear Lu Wenlong, who recognized a thief as his father and then returned to the right side.” true?

In "The Complete Story of Yue Fei," Lu Wenlong is portrayed as the son of Lu Deng, the military governor of Lu'an Prefecture. After the city fell, he was adopted by Jin Wuzhu and trained in the art of dual spears. It was only after Wang Zuo broke his arm and told stories that Lu Wenlong understood his true identity and defected to the Song Dynasty. The novel describes him: "Lu Wenlong used the spear in his left hand to hook away the broadsword; the spear in his right hand, with a whoosh, thrust toward Hu Tianbao's chest!" (Chapter 54 of "The Complete Story of Yue Fei"). After searching through both the "History of Song" and the "History of Jin," there is no record of Lu Wenlong. This character was created to provide a formidable opponent for the Yue family army on the battlefield, while also instilling traditional values of loyalty, filial piety, integrity, and righteousness.