Introduction to Sun Yat-sen: In 1912, the great revolutionary pioneer Mr. Sun Yat-sen went north to Tianjin. He came here twice and made a famous speech on the theater floor: "If our 400 million compatriots work together as one, it will be difficult for us to dominate the world." speech. Therefore, a full-length statue of Dr. Sun Yat-sen was also built in the courtyard.