At the end of Yuan Dynasty and the beginning of Ming Dynasty, Chen Youliang captured Taiping and occupied the upper reaches of the Yangtze River, and sent people to attack Jiankang with Zhang Shicheng. Someone advised Zhu Yuanzhang to lead the army to fight. Zhu Yuanzhang said: "The enemy knew that I was leading a large army to go out and used some of my troops to contain me, while the large army went downstream and went straight to Jiankang, which could be reached within half a day;" At that time, my infantry and cavalry rushed back and marched for a hundred miles. This is a taboo in the art of war. " So he summoned Kang Maocai and said to him, "If two enemies are in one place, the harm will be great. If we hit Chen Youliang first, then Zhang Shicheng will be scared. Can you bring Chen Youliang's troops here quickly? Cai Mao replied, "There is an old man in my family who served Chen Youliang in the past. If you want him to go, you will definitely gain the trust of Chen Youliang. " So he ordered the old man to deliver the letter.
The old man, the gatekeeper, took a boat and went straight to Chen Youliang Army. False is the angel of Kang Maocai, who promised to be the inside man when Chen Youliang attacked. Chen Youliang really believed it and was overjoyed. He asked where Kang Maocai was now. The old man replied, "Now he is in charge of guarding Jiangdong Bridge." Chen asked what the bridge looked like, and the old man replied, "It's a wooden bridge." So Chen Youliang rewarded him with a meal and sent the old man back. Before he left, he told me, "I'll be there soon. When I arrive, I will call' Lao Kang' as a signal. "
After the old man came back, he reported the above situation. Zhu Yuanzhang said, "Chen Youliang will fall into my trap." So he ordered people to quickly tear down the wooden bridge and replace it with a bridge of iron and stone structure, which was completed overnight. Ordered Shengfeng and Chang Yuchun to ambush beside Lime Mountain with 30,000 troops; Xu Da's army is waiting outside the south gate; Yang Can is stationed in Sheng Da Port; Zhang Desheng and Zhu Hu led the navy out of Longjiang Pass. Zhu Yuanzhang has been leading the army in Lulongshan, ordering the flag bearers to hide the yellow flag on the right side of the mountain and the red flag on the left side of the mountain, and warning them: "Raise the red flag when the enemy comes, and raise the yellow flag when you hear the drums. At this point, all ambush troops must attack immediately. " On the same day, Chen Youliang really led the fleet to the east. When he arrived at Sheng Da Port, the waterway was narrow and Yang Jing stopped him, so he gave up the river and took a boat to Jiangdong Bridge. When I arrived at the bridge, I was surprised to find that these bridges were all made of iron and stone. Even called "Lao Kang", no one answered. At that time, Chen Youliang realized that there was fraud, and immediately sent more than 1,000 navy divisions to Longjiang, and sent 10,000 troops ashore to build fences, which was very fierce. At this time, it was a hot summer. Zhu Yuanzhang had a premonition that there would be heavy rain, so he ordered the whole army to cook on the spot. There was no cloud in the sky at that time, but after a while, a strong wind suddenly blew from the northwest and it rained cats and dogs. At this time, the red flag was raised and all the soldiers rushed forward to pull out the fence. Chen Youliang commanded an army to come up against it. Hardly had the battle begun when the heavy rain stopped. Zhu Yuanzhang ordered drums to shake the earth. At this time. The yellow flag was raised. Ambush attack, Xu Da and other departments outside the south gate also came to the war, land and water went hand in hand, and both inside and outside converging attack, and Chen Youliang's army was defeated. Zhu Yuanzhang's army pursued the victory and regained peace in one fell swoop.
Throughout history, all the founding kings have both "talents" and "outstanding talents". It is precisely because of their extraordinary courage and outstanding intelligence that they can command millions of heroes, quell the rebellion and unify the whole country. Zhu Yuanzhang is not only a lean man in troubled times, but also a good strategist, so he can sit on the throne of the emperor. In other words, it is his "talent" and "outstanding talent" that give him the strength to compete with others and make him invincible.