Sun Yat-sen is the epitome of the great changes in China's modern history at a critical juncture. Without improving China's history, he finally stepped forward and promoted the development of China's history, so he was called the "father of the country" of the Republic of China. He created an era. Although he didn't realize his ideal in his lifetime, his famous saying is still of great significance today: "The world trend is vast, if you follow it, you will prosper, if you go against it, you will die."