What's the difference between guzheng and guqin?

There are many differences. Guzheng is bigger and guqin is smaller. Guzheng has many strings, and guqin has only seven sages. Moreover, the sound of guqin is lighter than that of guzheng, and it is not as passionate as guzheng. There are saddles on the guzheng, but there are no saddles on the guqin. In addition, guqin appeared as early as Fuxi period, and guzheng was much later. The first picture is a guzheng, and the second picture is a guqin.