《资治通鉴·后周纪·后周纪一》
晋州南面有个蒙，地形最为险要，王峻担心北汉军队占据它。
晋州南有蒙坑，最为险要，峻忧北汉兵据之。
There was a valley to the south of Jinzhou and its terrain was the most dangerous. Wang Jun was worried that the Bei Han army would occupy it.