History of the Northern Dynasties: Gao Huan besieged Yubi City, held by Wang Sizheng of Western Wei; the Western army did not come out, heavy snow…
Gao Huan besieged Yubi City, held by Wang Sizheng of Western Wei; the Western army did not come out, heavy snow killed his soldiers, and he withdrew in the eleventh month.
十月己亥，圍西魏儀同三司王思政於玉壁城
Location: 北史 卷6 興和4年
Gao Huan besieged the Western Wei fortress of Yubi and withdrew in the eleventh month (the Yubi battles).
齊獻武王圍寶炬玉壁。
Location: 魏書卷12·興和四年