Which verse in "The Troops and Chariots" criticizes the imperial court's border policy?

It is "The Emperor Wu has always wanted to open the border".

Because of the "unending Kansai soldiers", a large number of strong men were recruited. The reason for the "unending attack on Kansai" was precisely because "Emperor Wu had no intention of opening the border". "Where do taxes come from?" It also echoes the previous sentence "Thousands of villages grow Jingqi trees".

This way of taking care of each other and advancing step by step reveals the social reality more and more profoundly. Several short five-character sentences were suddenly used here, which not only expressed the sad and sorrowful mood of the garrison soldiers, but also showed the eagerness to express their difficulties. In this way, through the oral accounts of the parties involved, and from the two aspects of capturing soldiers and forcing rent, the double disasters caused by the ruler's brutal military force were revealed to the people.

Extended information:

"War Chariots" is a narrative poem written by Du Fu, a great poet in the Tang Dynasty. The whole poem is divided into two sections based on "people passing by the road ask passers-by": the first section describes the tragic farewell, which is a chronicle; the second section conveys the husband's complaints, which is a chronicle.

This poem has profound ideological content. It uses the husband's answer to the old man to express the people's hatred of the war and exposes Tang Xuanzong's long-term militarism and continuous wars, which caused huge disasters to the people.

The whole poem embodies emotions in the narrative. The order of the narrative is uneven and echoes back and forth. The changes are orderly and the transitional sentences and idiomatic words are cleverly used, creating a heart-stirring artistic effect. The poet created his own new Yuefu inscriptions to describe current affairs, and made a pioneering contribution to the New Yuefu movement that emerged in the mid-Tang Dynasty.