Cao Pi wanted to destroy Sun Wu, but why did he sigh, "It's God who wants the north and the south to continue to be separated!" "

In the early winter of 225 AD, the weather became colder every day. This year, the Cao Wei regime in the north planned a new round of military operations against Soochow. Emperor Wen of Wei Cao Pi left Xuchang with his important minister Sima Yi to guard the rear. He personally led an army of more than 100,000 people and marched south to attack the state of Wu. Since the founding of Soochow in 22 AD, threats from the Cao Wei army in the north have been constant. Sometimes Cao soldiers secretly crossed the river and set fire to sneak attacks on the Soochow garrison; sometimes it was encounters caused by Cao's death squads forcibly crossing the river. The monarchs and ministers of Wu State were too tired to cope with the situation and had no time to enjoy the joy of founding a country and becoming emperor. Especially in the autumn of a year ago, Cao Pi was no longer content with small-scale attacks, but instead assembled a large fleet to prepare for cross-river operations. Cao Pi also issued an edict stating that the purpose of going south this time was to find fighter opportunities. If he could capture Soochow, he would win with all his strength; if he could not, he would also plunder. However, this trip south was ultimately stranded due to strong winds and swells in the Yangtze River during the autumn flood season, which Cao Pi's fleet could not cope with. A year later, Cao Pi's ambition to swallow up Wu and unify the world was still strong. Before the expedition, Cao Pi held a meeting of ministers to solicit opinions. Bao Xun, the censor Zhongcheng, advised: ""The army marched thousands of miles, and the losses were really serious. Moreover, during last year's southern expedition, His Majesty's dragon boat was trapped in the waves of the river. You were in danger, and your ministers were also terrified. I thought it was impossible to attack Wu again. "But Cao Pi punished Bao Xun angrily. However, Cao Pi was not indifferent to Bao Xun's reminder. Since the storm a year ago was due to choosing the wrong time to go out, wouldn't it be possible to avoid making the same mistake again by choosing to go south during the dry season in winter? In August of that year, Cao Pi officially led the navy from Qiaodi (now Qiaocheng District, Bozhou City, Anhui Province) and entered the Huaihe River along the Wishui River. In October, when the water was dry, the army arrived at Guangling City (now Yangzhou City, Jiangsu Province). As early as the Spring and Autumn Period, a canal was built in Guangling City to connect the Huaihe River and the Yangtze River. Cao Pi's fleet was gathering on the canal, ready to sail into the Yangtze River at any time. However, the anxious monarchs and ministers of Dongwu were prepared to fight against the odds. What happened, Cao Pi actually withdrew his troops! Why? It turned out that the low temperature in winter saved Soochow. This winter, the weather was particularly cold, and the canals in Guangling City froze overnight. Tens of thousands of troops and countless ships were completely frozen in the canal, unable to sail out, let alone cross the river to fight. Cao Pi couldn't help but sigh: "God wants the north and the south to continue to be separated!" "In desperation, he had no choice but to lead his army back to the north. An inevitable unification war between the north and the south disappeared due to weather conditions. After Cao Pi returned to Luoyang, he fell ill soon after he returned to Luoyang and died of illness in May of the following year. Six months later, For more than ten years, Cao Wei never launched a large-scale cross-river battle with the goal of destroying Wu. The pattern of confrontation between Wei and Wu across the river became history.