《旧五代史·后周·太祖纪三》
此前，汉代法律不论盐曲斤两多少，犯者全部处以极刑，到现在开始改革法律。九月十七日，诏令北面沿边境一线的州镇，各自守卫自己的疆界，不准越过边界俘获抢劫。
诏北面沿边州镇，自守疆埸，不得入北界俘掠。
Before this, the Han Dynasty law did not consider the amount of salt and wine, and all offenders were sentenced to death. Now the law is being reformed. On September 17th, an imperial edict was issued to the states and towns along the northern border, asking them to guard their own borders and not to cross the border to capture people and loot.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 诏北面沿边州镇，自守疆埸，不得入北界俘掠。 [/INST] Before this, the Han Dynasty law did not consider the amount of salt and wine, and all offenders were sentenced to death. Now the law is being reformed. On September 17th, an imperial edict was issued to the states and towns along the northern border, asking them to guard their own borders and not to cross the border to capture people and loot.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 诏北面沿边州镇，自守疆埸，不得入北界俘掠。
user
Before this, the Han Dynasty law did not consider the amount of salt and wine, and all offenders were sentenced to death. Now the law is being reformed. On September 17th, an imperial edict was issued to the states and towns along the northern border, asking them to guard their own borders and not to cross the border to capture people and loot.
assistant