Yang Jian, Emperor Wen of Sui Dynasty, replaced the Northern Zhou Dynasty and established the Sui Dynasty. Emperor Wen of Sui Dynasty was determined to unify China and implemented a series of policies to enrich the country and strengthen the army in the north, which greatly increased the national strength. At that time, Chen Shubao, the late leader of the Chen Dynasty on the South Bank of the Yangtze River, was very dissolute and ignored the government. Although he knew that Emperor Wen of Sui Dynasty intended to expedition, he relied on the natural danger of the Yangtze River and didn’t take it to heart.
Once, Emperor Wen of the Sui Dynasty asked Gao Ying about his plan to destroy Chen. Gao Ying replied: “the crops in the south of the Yangtze River mature earlier than those in the north of the Yangtze River. We threatened to send troops in their harvest season, and they will give up farming time and garrison troops for defense; When they were ready, we stopped sending troops. They won’t believe it if they come here several times. When they are not ready, we suddenly and really send troops to cross the river, we can catch them by surprise. In addition, the grain in the south of the Yangtze River is not stored in the cellar in the north, but in the warehouse built of Mao and bamboo. We can secretly send people to set fire to destroy it. If it is burned for several years, the financial resources of the Chen Dynasty will be greatly weakened, and it will be much easier to destroy it. ”
Emperor Wen of Sui Dynasty adopted Gao Ying’s plan. After seven years of preparation, he ordered the cutting of Chen in the winter of 588 A.D. Before departure, he said to Gao: “I am the parents of the people all over the world. Can I not save the people there because of the barrier of the narrow Yangtze River like a clothes belt?” Emperor Wen of the Sui Dynasty was determined to win. He sent Yang Guang, king of Jin, as marshal, to lead 500000 troops to the south of the Yangtze River, launched a fierce attack on Jiankang, the capital of the Chen Dynasty, and soon captured Jiankang, captured the empress Chen and destroyed the Chen Dynasty.
A strip of water means that although there are rivers, lakes and seas separated, the distance is not far enough to become an obstacle to communication.