大单小单大双小双公式

简介：After Lu Zhenfei, Tian Yang, who succeeded him, was virtuous and incompetent, and the Lianghuai River was decadent. When the Qing army invaded, they had no ability to resist and collapsed thousands of miles away. Yangzhou Shi Kefa was besieged. At that time, Tian Yang still had eight thousand troops and could not save him. Yangzhou fell and Huai'an was abandoned into the sea. Later, he surrendered to the Qing Dynasty, but was killed by the Qing army.