Wanchojang refers to a craftsman who has three levels of functions: the function of screening and processing after cultivation of a complete plant, the function of dyeing the plant with paint, and the function of reviving aesthetic elements with proper arrangement of dyeing finished plants.

It was recorded that the Wancho craft was used in the "Samguk Sagi" from Silla. During the Joseon Dynasty, the government office included Wanggol as one of the items that required public payment, indicating that Wancho crafts were very valuable.

Han Myeong-ja, a master of the Wanchojang, produces works with everyday artifacts that combine beauty and use, such as granite, bowl form, and octagonal box, and is also making utmost efforts to transfer the function of Wancho Craft.