What was the name of the bad king in Sui Dynasty? What's the country name? What emperor do you call yourself?

Yang Guang, Emperor of Ming Dynasty, Emperor Yang Di of Sui Dynasty, year number: Daye. He has a double personality. On the one hand, he is dissolute, cruel and conceited; On the other hand, he is brilliant and knowledgeable. As recorded in "Learning from Your Own Experience", Emperor Yang Di "likes to read and write, and was appointed as the general manager of Yangzhou, with a bachelor's degree of 100, and often revised it, even became an emperor, and the revision has never stopped in the past 20 years; Self-study, articles, military affairs, agriculture, geography, medicine, divination, Buddhism, Taoism, and even Bobo and Eagle Dog are all new books, all of which are integrated and composed of more than 7,000 books in 3 1 department. At the beginning, Xijing Jiazetang had more than 370,000 books, and the emperor asked his secretary Liu to be responsible for the interpretation. Besides its repeated accusations and miscellaneous works, Du Dong Xiuwentang has collected more than 37,000 books and written 50 books. The books are divided into Xijing, Dudong Palace, province and government, all of which are cut out. " In addition, Emperor Yang Di himself wrote many poems. Later generations collected Yang Guang's works and compiled them into Yang Di Ji.