Guqin. "High Mountains and Flowing Waters" is one of China's top ten ancient songs. It was played by Yu Boya, a pre-Qin qin master, on the guqin. Yu Boya used the sound of the qin to describe the artistic conception of mountains as tall as Mount Tai and vast oceans as rivers. The sound of the guqin is melodious and melodious, making it very suitable for playing. Such musical works express natural landscapes and emotions.