single-hook brush grip
In calligraphy, a brush-holding method where the brush is held between the thumb and index finger, as opposed to the 双鉤法 (double-hook method).
See also: 双鉤法
Beginners in calligraphy first practice how to hold the brush using the single-hook method.
The single-hook method tends to allow freer brush movement compared to the double-hook method.