There are big projects (Qin Changcheng, Sui Grand Canal).

The taxes of these two dynasties were so heavy that the people could not afford them at all, so they were forced to do so. However, they were unified by the great turmoil. After the Great Division, China was in urgent need of rest. Qin Shihuang did not lay a good foundation, and the foundation was basically rotten for decades. A year after his death, there was a great turmoil. Wendi laid a very good foundation. In the past 20 years, his national strength has recovered rapidly. However, he is not ready and will continue. But Emperor Yang Di was not sure about the Grand Canal, and the foundation had been hollowed out quickly.

Emperor Yang Di must have known the consequences of Qin Ershi, but he didn't expect his management to be worse than that of Qin Ershi. In other words, Emperor Yang Di's conceit deceived his eyes. What he saw was a vibrant and powerful empire under his management. He didn't expect that he was killed by a mutiny, which was almost the same as the mutiny in Qin Ershi. Generally speaking, Emperor Yang Di didn't really realize the form of the whole country, but he also. But it still came in handy. Anyway, it was a dynasty that benefited future generations. He just wanted to fix it quickly and abused his financial resources. When he was a teenager, he led troops to fight and won a great victory. It is controversial to kill his father and ascend to the throne now. First, there is no time. Second, there is no motive. So the real situation should be tampered with by the rulers of the Tang Dynasty. Remember a word, history is changed by winners, and it is his tragedy that Qin Ershi became emperor. He has no IQ to see a breakthrough. He was unable to manage the empire left by his father, and was deceived by Zhao Gao for a long time. At that time, Daqin was not hopeless, and Qin people would not rebel unless they had to. They are all waiting for a good emperor to reduce their taxes, mainly the rulers of the Qin Dynasty.