The term "Sun Yat-sen" refers to a specific historical figure rather than a common English word. Here’s a simple explanation:
Sun Yat-sen (pronounced "suhn yaht-sen") was a Chinese leader and politician who played a crucial role in the history of China. He is best known for leading the movement that helped to end the rule of the Manchu dynasty in China in the early 20th century. He is often called the "Father of Modern China" because he helped to establish the Republic of China.
In more advanced discussions, you might refer to his political philosophy, known as the "Three Principles of the People," which focuses on nationalism, democracy, and the livelihood of the people.
Remember, "Sun Yat-sen" is a name important in the context of Chinese history, especially related to the early 20th century and the establishment of modern governance in China.