After Tuoba Gui defeated Murong Nong and seized Bing Province (并州, modern central and northern Shanxi), he headed for Zhongshan, and Murong Bao put Murong Lin in charge of Zhongshan's defenses.
Following Tuoba Gui's conquest of Bing Province (now part of central and northern Shanxi), he set his sights on Zhongshan. At the same time, Murong Bao designated Murong Lin to protect the city from potential threats.