In fact, Yang Guang cannot be called a bad king. Although he has no good moral character, some things he has done are worthwhile. He started the Grand Canal. The opening of the Grand Canal has promoted the development of cities along the canal, strengthened the communication between the north and the south, and made people's travel more convenient. He opened the imperial examination, and the people he recruited were all based on his talents, not anything else.
Yang Guang is a personal hero. He likes to show off and exaggerate his own role, without paying attention to the wisdom and strength of others. To put it bluntly, he thinks he is a Chinese odyssey, and everyone else is gluttonous. Therefore, Yang Guang will not handle his relationship with officials and ordinary people. He really wants to create a great career, thinking that he can do it alone, completely ignoring the strength of others. He doesn't pay attention to the feelings of ordinary people and doesn't think about them everywhere, so he abuses the power of the people, so that they can't bear this pressure and rise up against it.
He was more ambitious, so he conquered Koguryo many times. In fact, Koguryo didn't listen to the suzerain and should conquer it. However, his method is too radical. He wants to control the whole army through war and constantly consume the power of Guanlong Group, but he is not a fool. Often wage war, they also began to take the method of hide and seek, because war is not good for them. The war consumed a lot of financial and material resources, and the people in Guanlong Group could not afford it, so a rebellion broke out in Yang Xuangan.