Yang guang played a joke on the gate valve.

Judging whether a monarch is a bad king should be discussed from a comprehensive perspective. You can't deny all his achievements just because one person's fault. Just like Qin Shihuang, although he was a famous tyrant, he was praised by the people because he was the first person to unify the six countries. Today, the Great Wall is still a historical site in our country. On a year-on-year basis, so did Emperor Yang Di. Although he has done many disgusting and irritating things, we can't ignore his achievements.

During his tenure, he took many measures: the purpose of taking scholars in the imperial examination was to dilute the control of the upper aristocratic group by using the lower intellectuals. The construction of the Beijing-Hangzhou Grand Canal, which runs through the north and south, will integrate the whole country and weaken the influence of Guanlong aristocratic group. These two measures still have a far-reaching impact on the world and China, and objectively promoted the development of China, especially the Grand Canal. Although some people say it is for selfish desires, it has promoted economic progress and circulation between the North and the South.