《三国志·吴书·周瑜鲁肃吕蒙传》
这时刘备令关羽镇守，保守荆州全部土地，孙权下令吕蒙西往夺取长沙、零陵、桂阳三郡。
是时刘备令关羽镇守，专有荆土，权命蒙西取长沙、零、桂三郡。
At that time, Liu Bei ordered Guan Yu to guard and defend the entire Jingzhou territory, and Sun Quan ordered Lv Meng to go west to capture the three commanderies of Changsha, Lingling and Guiyang.
<s>[INST] Provide a modern Chinese interpretation of the following Classical Chinese passage: 是时刘备令关羽镇守，专有荆土，权命蒙西取长沙、零、桂三郡。 [/INST] 这时刘备令关羽镇守，保守荆州全部土地，孙权下令吕蒙西往夺取长沙、零陵、桂阳三郡。</s>
Provide a modern Chinese interpretation of the following Classical Chinese passage: 是时刘备令关羽镇守，专有荆土，权命蒙西取长沙、零、桂三郡。
user
这时刘备令关羽镇守，保守荆州全部土地，孙权下令吕蒙西往夺取长沙、零陵、桂阳三郡。
assistant