背腹受敌

Explanation: That both before and after the attack by the enemy. 　　Source: "The new family of Five Shinan Tang Li Lei": "I of a water war, leaving the Huai Bing Zheng Yang pontoon off, then my belly back by the enemy." 　　Examples: Tiger Gao Qi surgery expansion to the south to "the plot is difficult to achieve, but to make Jin ~, troops dispersed. ★ Fan Wenlan Cai Meibiao such as" History of China to "Chapter IV, Section III