Guitars can be divided into several categories: Classical guitar, folk guitar, flamenco guitar, jazz guitar, Hawaiian guitar, and electric guitar. Folk guitar can be subdivided into Acoustic guitar and Cutaway, with the former suitable for playing chords and the latter suitable for playing high pitched Solo. The neck of a folk guitar is relatively thin, with a width of 42mm on the upper finger. There are 14 characteristics from the string pillow to the body, and there is a crescent shaped guard on the box, which is played with steel wire strings. The most populist member of the guitar family. On the fingerboard, from the string pillow to the joint between the handle and the box, there are 14 grades. The fingerboard is narrow and uses steel strings. The tail of the piano has straps and nails, and there is usually a protective plate on the panel, which can be played with nails or paddles. Folk guitar has a round and bright tone, deep and honest sound quality, and a relatively free playing posture. It is mainly used to accompany singers and is suitable for rural, folk, and modern music. The performance form is relatively relaxed and casual. Grassroots have a strong flavor and are the most common among many guitars.