Positive comments were made on Sun Yat-sen's first completely anti-feudal banner of "creating a republic and ending the monarchy", organizing revolutionary political parties and launching an armed uprising, which led the Revolution of 1911 that shocked China and foreign countries, overthrew the autocratic rule of the feudal dynasty that lasted for thousands of years in China history, opened a new chapter in the history of China's democratic revolution, and made great achievements for several generations in China's democratic revolution. The obvious differences between Sun Yat-sen and the hero of peasant uprising who resisted the feudal dynasty and the contemporary representative of bourgeois reformists are as follows: First, he combined the essence of capitalist system in Europe and America with the backward feudal autocracy in China through other ways, and from the purpose of "people-oriented", he not only put forward the basic theory of "Three People's Principles", but also made great efforts to transform backward old China from the aspects of national system, politics, economy and culture. Second, from the beginning of initiating and organizing the revolution to the end of his life, in the process of leading the whole bourgeois-democratic revolution, he unswervingly adhered to the thorough field of anti-feudal establishment and the firm revolutionary direction, faced the call of the Manchu court, the siege of reactionary warlords, the intimidation of imperial power, the argument between reformist royalists, the rebellion within the camp and the differences among comrades in the party, and organized and reformed revolutionary political parties many times in extremely difficult and risky environments. Third, he has always adhered to the lofty spiritual realm of "serving the public wholeheartedly", from founding the League and League, launching ten armed uprisings in Guang, Hui and Huang Huagang, to leading the Revolution of 1911, establishing an interim government, holding a second revolution, organizing and reforming the Kuomintang, establishing the Whampoa Military Academy, implementing the cooperation between the Kuomintang and the Communist Party, and giving up personal fame and fortune until his early death, showing broad-mindedness, selfless dedication and lifelong efforts. Sun Yat-sen's theory, standpoint, belief and moral sentiment can be said to be unique. It is precisely because of Sun Yat-sen's unremitting efforts and the popularization of revolutionary theory that the broad masses of people in China got rid of the shackles of feudal thought and the misunderstanding of the "reactionary" political thought of the Democratic Republic, which effectively promoted the development of the democratic revolutionary movement in China, expanded its influence and made the Democratic Republic deeply rooted in the hearts of the people. Even the later "New Democratic Revolutionary Movement" was developed on the basis of Sun Yat-sen's work. Sun Yat-sen was a great democratic revolutionary activity in modern China. Especially during my medical study and internship, I made many international friends and overseas Chinese, which laid the foundation and support for the future revolution. Sun Yat-sen was one of the first revolutionaries who advocated overthrowing the Manchu rule by revolution and establishing the government of the Republic of China. Because Sun Yat-sen received western education in his early years, he has a deep understanding of the western world, is familiar with foreign languages and has a doctoral calendar, and enjoys a reputation at home and abroad. Therefore, it is regarded as a revolutionary leader by most foreigners. At home, most revolutionaries also think that his reputation and ability are enough to become a representative of revolutionary organizations, so Sun Yat-sen was successfully elected as interim president after Wuchang Uprising. After the death of Sun Yat-sen, Chiang Kai-shek led the National Revolutionary Army founded by him to carry out the Northern Expedition, thus completing the reunification of China in name. Because the main things that participated in the revolution at that time, especially Chiang Kai-shek and Wang Jingwei, were all cultivated by Sun, the National Government at that time regarded Sun as the highest spiritual leader and recommended the Three People's Principles as the highest guidance for governing the country. 1937 after the outbreak of War of Resistance against Japanese Aggression in China, Sun became one of the symbols of national centripetal force except Chiang Kai-shek. The national government and its generals often call for "safeguarding the revolutionary achievements of Premier Sun" to encourage people to build and fight against soldiers. Therefore, in the middle and late period of the Anti-Japanese War, Sun Yat-sen was naturally elected as the founding father of the Republic of China.

For the analysis of Sun Yat-sen's historical contribution, it is mainly believed that Sun Yat-sen really advocated the modern Republican revolution, successfully organized various anti-Qing forces with complex components, and injected elements of modern western political theory and constitutional thought. Although Sun Yat-sen also attached importance to mastering the power of leaders, he was more idealistic and could give up political resources for the needs of system construction. Although Sun Yat-sen advocated overthrowing the autocratic monarchy by force and pacifying the warlord regime by force, his method was moderate, and the measures of rehabilitation were tolerant, and he did not take the practice of thorough eradication, which was different from that of Chiang Kai-shek or Mao Zedong who emphasized organizational discipline and severely punished opponents.

Sun Yat-sen is also an important stage figure in China's political and economic modernization. He comprehensively integrated the important contents of modern western bourgeois democratic thoughts, including constitutional democracy, people's sovereignty (election, recall, creation, referendum), separation of powers, socialism and so on. In addition, China's traditional institutional institutions-supervision power and review power, which he personally considered necessary, formed the five-power constitutional theory. The popularization of important western thoughts in China has the role of a promoter, which has promoted the westernized Democrats and communists to explore the future construction of China. However, Sun Yat-sen took a compromise position in it, but it still has its value to adhere to the constitutional system of republicanism and democracy. [9]

Sun Yat-sen is a leader who advocates revolutionary ideas, organizes and leads revolutionary groups. The sacrifices and contributions made by Sun Yat-sen to overthrow the imperial system are also recognized by most people. However, in his political career, Sun Yat-sen turned against his comrades-in-arms because of his stubbornness. For example, Zhang Taiyan in the League era and Huang Xing of the China Revolutionary Party were once Sun's arms, but later they turned against each other.

If we look at this historical event from an isolated point of view, Sun Yat-sen's abdication to Yuan Shikai was indeed the initial reason for Yuan Shikai's theft of the country, the collapse of the revolutionary regime and the retrogression of the Republican system. It seems logical that some historical theories and historical theories have derived the evaluation of "Sun Yat-sen's big mistake". However, from the objective reality, if we put this event in the historical and social environment of the late Qing Dynasty and the early Republic of China, we will naturally get the opposite evaluation-Sun Yat-sen's abdication of Yuan was not a mistake or limitation, on the contrary, it was a great historical achievement that contributed to the abdication of the Qing emperor and the overthrow of feudal autocracy, and promoted the banner of democracy and republicanism to fly and the revolutionary trend of thought to be deeply rooted in people's hearts.

1In August, 905, Sun Yat-sen, Huang Xing, Liu Juemin and others established a national alliance of bourgeois revolutionary parties in Tokyo, Japan, based on revolutionary groups such as the Xingzhonghui and Huaxinghui. Sun Yat-sen was elected Prime Minister, and his revolutionary aim of "expelling the Tatars, restoring China, establishing the Republic of China, and sharing land rights equally" was taken as the platform of the alliance. In the publication of People's Daily, the organ newspaper of the League, Sun Yat-sen first put forward the three principles of nationality, civil rights and people's livelihood. The establishment of the League strongly promoted the development of the national revolutionary movement.

Negative evaluation

It is true that, when analyzed realistically, there is no shortage of gold, no one is perfect, Sun Yat-sen is a man, not a god, and his theory and practice are not perfect. For example, he lacked in-depth research on the embryonic state of capitalism in old China at that time and the weak characteristics of the national bourgeoisie. His lack of understanding of Yuan Shikai, Duan, Chen Jiongming and other old and new warlords, the serious contradictions and differences within the revolutionary party, and the lagging understanding of the establishment of revolutionary military forces are all limitations of his personal thoughts and actions. However, compared with the historical scope and the objective reality of the social environment in old China at that time, his personal limitations were partial and insignificant mistakes, which did not hinder the general direction and historical trajectory of the old democratic revolution, nor did it damage his glorious image of establishing revolutionary theory, leading revolutionary movements and opening a new chapter in history.