In 913, when Li Cunxu the Prince of Jin attacked Yan, Lu Wenjin surrendered to Jin, and, because he surrendered early, was given the title of prefect of Shou Prefecture (壽州, in modern Lu'an, Anhui) - purely an honorary post as Jin did not then control that region.
As of 917, by which time Li Cunxu had conquered Yan, he was locked into a lengthy campaign with Jin's archrival Later Liang.