The erhu is a traditional Chinese string instrument known for its unique sound and expressive capabilities. It has two strings and is played with a bow, which is made of horsehair. The body of the erhu is typically made from wood, and it features a small, round resonator covered with python skin, which contributes to its distinctive tone. Often referred to as the "Chinese violin," the erhu is an essential part of Chinese music, used in various genres, including folk, classical, and contemporary styles. It is played solo or as part of an ensemble, showcasing its versatility and emotional depth in performances.