Up to now, the city is still very depressed, and people's livelihood mainly depends on border trade. The army and businessmen will go to the market to raise materials or do business.
The idea of the topic is Chen Yinque's "Prove history with poetry"
B, poetry can be used to reflect historical facts, but the content reflected here is wrong; C, poetry does not need to confirm such a big conclusion, because historical research does not advocate individual historical facts to support such a big conclusion; D, the content of the poem itself does not mention the embodiment of peace and stability.