Guqin is noble, but erhu is cheap?

No, there is no difference between guqin and erhu.

Guqin, also known as lyre, Qin Yu and lyre, is a traditional plucked instrument in China, with a history of more than 3,000 years, belonging to the silk in the eight tones. Erhu began in the Tang Dynasty and is called "Xiqin". With a history of 1000 years, it is a traditional stringed instrument in China. Both are traditional Chinese musical instruments, and they are equal, and there is no distinction between high and low.

Guqin has three different timbres: delicate, soft and slightly sad, crisp, lofty and deep. The timbre of erhu is rich, soft, pure, mellow and layered.