《明史·列传·卷六十》
当时皇上派遣官员测量两镇军田，一军八十亩以外，都征税五升。
时遣官度二镇军田，一军八十亩外，悉征税五升。
At that time, the emperor sent officials to measure the military land of the two towns, and all land in excess of eighty mu per military unit was taxed at a rate of five dou.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 时遣官度二镇军田，一军八十亩外，悉征税五升。 [/INST] At that time, the emperor sent officials to measure the military land of the two towns, and all land in excess of eighty mu per military unit was taxed at a rate of five dou.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 时遣官度二镇军田，一军八十亩外，悉征税五升。
user
At that time, the emperor sent officials to measure the military land of the two towns, and all land in excess of eighty mu per military unit was taxed at a rate of five dou.
assistant