In 909, Wei Quanfeng, who had been controlling four Zhennan prefectures centered around Fǔ Prefecture (撫州, in modern Fuzhou, Jiangxi, note different tone than the prefectures in Tianmen and Hezhou) for years, claimed the title of military governor of Zhennan and set to attack Hong Prefecture. When Wei sought support from Ma, Ma sent Wan Mei () and Peng Gan's nephew Peng Yanzhang () to put Gao'an (高安, in modern Yichun, Jiangxi) under siege to divert Hongnong forces. Subsequently, after Wei was defeated and captured by the Hongnong general Zhou Ben, Chu forces withdrew. Further, Peng Gan abandoned Ji Prefecture and fled to Tan, thus allowing Hongnong to take over Ji. Ma made Peng Gan the prefect of Chēn Prefecture, and took one of Peng's daughters as the wife of his son Ma Xifan.