What is the difference between the timbre and expressiveness of pipa and erhu?

The erhu is a stringed instrument, and its varied timbre is one of the characteristics and highlights of traditional folk instruments. It is because of this unique feature that makes the erhu more expressive and infectious, more ethnic flavor, Chinese flavor. From it, the charm of folk music culture can be reflected. On the basis of inheriting the traditional national music, let's keep innovating to make the timbre of erhu richer and let the ancient art of erhu burst out the luster of the new era. The sound of erhu has its unique characteristics, mellow and soft, beautiful and melodious. Its sound is similar to that of the human voice, which is more singable and expressive.

The pipa is a plucked instrument, and its sound quality can be characterized as the same system of folk music as the liuqin, and their pronunciation is crisp, bright, and rich in granularity. Pipa's tone is clear and bright, and the famous poem of Chinese poet Bai Juyi of the Tang Dynasty, "Big pearls and small pearls fall from a jade plate," vividly describes pipa's tonal characteristics.

Because my main specialty is the erhu, so the erhu understand more y, I think the stringed instrument is more expressive, slippery, kneaded, buckle (pressure), roll, and other skills are other plucked percussion instruments can not be reached, such as the piano, the yangqin's instrument does not have the performance of these skills; however, each has its own characteristics!