A pencil case refers to a person who makes a brush, which is one of the literary sources, and its technique.

The brush shall contain ink but be uniformly radiated, have no durability and no cracking of the pen tip that can withstand wear for a long time, and maintain elasticity and flexibility.

The hair of several animals, including sheep's armpit hair, weasel tail hair, and hare hair, is used as a material to meet these conditions, and the colder the animals in the inland, the better the quality.

The brush's composition consists of a hunch and a brush, and in the case of a large brush, a corals connecting the brush and brush strokes, which mainly use bamboo, and a large number of oak trees.

The making process of the brush consists of a complex and delicate process of screening-de-dissipating-static-wool-moly- denominator-body and tactile-push insertion. Kim Jong-chun, a functional holder, has been engaged in traditional craftsmanship since his teenage years, especially in the production of yellow hair made from weasel tail feathers and long-heat brushes using female-noru armpit hairs.

Yoo Pil-moo, a native of Anseong-myeon, Chungju, has been known as the nation's best" traditional brush-making master" for more than 40 years since he entered the workshop at the age of 16.

Yoo Pil-moo's traditional brush production method is divided into 13 major processes, ranging from screening the original wool to feeding and subtracting grasses, and in detail, a lot of effort is put into the process, which requires more than 30 courses and 250 touches.

After the brush is finished, traditional patterns with Korean colors are added to the brush to add beauty.

In addition, there is a marked difference from other craftsmen in the process of removing fat to make the original wool into a brush stroke, and the method of adhesion of the brush and brush strokes.

Piljang is a craftsman who makes brushes using basic materials such as fur and bamboo. The brush is made of a cone by collecting the animal's fur and fixing it to the brushstrokes. It mainly uses animal hair, such as goat hair and weasel hair.

The brush-making function is the same everywhere in the country, and not only is the number rapidly decreasing recently, but the tradition of Korean brush-making may be cut off due to the influx of Chinese brushes and materials (chlorine hair).

The value of designation is significant in that it is necessary to preserve the traditional function of making brushes using goat hair and bamboo in Gangwon-do.

Since settling in Chuncheon in 1985, Park Kyung-soo has played a role in preserving and inheriting Korea's traditional brush-making functions by using traditional techniques throughout the entire process, such as straightening, removing oil, shaping, tying brush straws, and applying brush strokes.