This sentence comes from the Tang Dynasty poet Du Mu's Red Cliff:
A broken iron halberd sank into the sand and disappeared, only to find that it was the remnant of Battle of Red Cliffs after grinding and washing.
If the east wind is not convenient for Zhou Yu, I'm afraid the outcome will be Cao Cao's victory and Er Qiao's detention in Tongquetai.
The main idea of this poem is: If the east wind doesn't come, how can Zhou Yu burn Cao Cao's 80 Wan Shuijun with the east wind and win a great victory? The overall situation of the three countries is uncertain. Presumably, when Cao Cao built a bronze sparrow terrace in Yedu (now Linzhang County, Hebei Province) two years later, Wu Dong beauties Da Qiao (Mrs. Sun Ce) and Xiao Qiao (Mrs. Zhou Yu) may be locked in a bronze sparrow terrace, and they have infinite love for spring.
This poem is full of emotion and eulogizes history, pointing out that Battle of Red Cliffs is related to the survival of the country and social security; At the same time, it implies that you are ambitious and will not be reused. See the big from the small.
"If you don't sell iron, you will recognize it if you wash it." These two sentences mean that the broken Zhan Ji sank in the sand and was not eroded. After grinding, he recognized it as a relic of the previous dynasty. Here, these two descriptions seem dull, but they are uneven. The broken halberd is buried in the sand, pointing out the historical situation here. The broken sand in Zhan Ji has not been eroded, suggesting that time has passed and things have changed. It was because of the discovery of this rusty "broken halberd" buried at the bottom of the river for more than 600 years that the poet had a lot of thoughts, so he had to grind it out and identify it, and found that it was a weapon left over by Battle of Red Cliffs. In this way, the remains of the former dynasty further aroused the author's imagination and laid a good foundation for the later expression.
"Dongfeng is not with Zhou Lang, and Tongque Chunsuo Er Qiao." These last two familiar words mean that if Dongfeng hadn't helped Zhou Yu, Tongquetai would have locked Er Qiao in Dongwu. This involves the famous Battle of Red Cliffs in history. The poet is quite clear about this, because Du Mu himself has the ability to help the world through the country, is familiar with politics and military affairs, and is very familiar with history and current affairs. As we all know, both Battle of Red Cliffs and Wu Sheng were defeated by Cao Cao, but here the author made a bold assumption of reverse thinking and put forward a hypothesis that is contrary to historical facts. What would have happened if Dongfeng hadn't helped Zhou Yu? The poet did not speak frankly about the end of the war. But "Tongquetai locks Er Qiao in spring". Tongquetai is Cao Cao's luxurious and dissipated place, where concubines and geisha are kept. The bronze sparrow terrace here reminds people of Cao Cao's romantic side. It is said that "deep spring" has deepened this romantic charm. Finally, the word "lock" is used to further highlight the meaning of his golden house. It is really admirable to write so many stories about the victory and defeat of the war filled with smoke.
This poem means that Zhou Yu's victory was accidental, and it is not a national policy to rely on temporary luck. If it weren't for the sudden attack of the east wind and the help of the Shu army, Zhou Yu's fire attack plan would show great strength, and then the Wu Dong regime would be destroyed by Cao Cao. The poet's banter about Zhou Yu implies an affirmation of Cao Cao.
Du Mu (803- 852 AD) was born in Fanchuan, Han nationality, Jingzhao Wannian (now Xi, Shaanxi). Du Mu was an outstanding poet and essayist in Tang Dynasty, the grandson of Du You, the prime minister, and the son of Du You. Tang Wenzong Daiwa was a 26-year-old scholar in the second year and was awarded the post of Hong Wen Pavilion. Later, he went to Jiangxi to inspect the ambassador's tent, and then turned to Huainan to inspect the ambassador's tent. He was the editor of the National History Museum, the food department, Bibi department and Si Xun, and the secretariat of Huangzhou, Chizhou and Zhou Mu. Because he lived in South Fan Chuan Villa in Chang 'an in his later years, he was later called "Du Fanchuan" and wrote "Collected Works of Fan Chuan". Du Mu's poems are famous for their seven-character quatrains, and the main content is to chant history and express emotion. His poems are handsome and natural, and cut into secular things. He achieved great success in the late Tang Dynasty. Du Mu is called "Xiao Du" to distinguish it from Du Fu and "Da Du". Also known as "Little Du Li" with Li Shangyin.