Introduction to Tongyin Pavilion: Tongyin Pavilion is a single-story garden building with a small tile roof on a hillside. It is named after the sound of rain falling on the leaves of the sycamore tree. The building was rebuilt in the ninth year of Tongzhi in the Qing Dynasty. Zeng Guofan, then the governor of Liangjiang, often played chess here. Sun Yat-sen, the interim president of the Republic of China, also often met with guests here.