This is a normal sentence pattern.

Meaning: Qin Shihuang then ordered Meng Tian to build the Great Wall in the north to guard the border. North: In the north, the directional noun is used as an adverbial. Fence: a metaphor for a barrier on a border. Fan, fence.

From: "On the Passage of Qin" by Jia Yi of the Western Han Dynasty.

Original text: Meng Tian was ordered to build the Great Wall to the north and guard the fence, but the Huns were more than 700 miles away; the Hu people did not dare to go south to herd horses, and the scholars did not dare to bend their bows and complain.

Translation: Qin Shihuang then ordered Meng Tian to build the Great Wall in the north and guard the border, causing the Xiongnu to retreat for more than 700 miles. The Hu people did not dare to go down to the south to graze their cattle, and the warriors did not dare to draw their bows and shoot arrows in revenge.

Extended information:

Creative background:

"On the Passage of Qin" is a political treatise, the main purpose of which is to analyze "Qin's faults". The previous article reviewed the history of Qin's prosperity and pointed out that Qin's reform and development allowed it to conquer the world. In the middle and second parts, the author discusses in detail the various mistakes made after the unification of Qin.

The middle chapter points out that Qin unified the world and ended many years of war. It was originally in a good situation, but Qin Shihuang did not formulate correct policies. Instead, he burned books, harassed Confucians, and ruled the world with violence; In his second year, he still could not correct his original mistakes, which eventually led to the overthrow of the country.

In the second part of "On the Passage of Qin", the author continues the previous article and points out that if Ziying can change the original wrong policy, the country's unity can be restored. But unfortunately, the Qin Dynasty's consistent policy of silence led to the "Yongguan" from top to bottom, leaving Ziying isolated and without relatives, and ultimately inevitably perished.