The mask dancing has its origin in the ancient Shilla Dynasty and was performed by the common people as religious rite or as plays for amusement.

Sandi Masque Dance: The mask depicted in the 5 Won stamp is Chuybali, one of the characters appearing in Sandi mask dancing that had been played in Kyonggi Province area during the Lee Dynasty. Sandi mask dancing is classified into Bon-Sandi and Byol-Sandi. The former used to be played on national holidays, festival days such as Buddha's Birthday in April, Dan-o festival in May and Moon festival in August, or on ritual prayers for rain, while the latter, which is still seen performed in old Yangju town was played all the year round regardless of time. Sandi mask dancing, chiefly a combination of music, dancing and rarely dialogues too, often runs over 10 hours without using any stage settings or aids and touches the commoner's revolt against the privileged class and the superficial morality privilege of the Yi Dynasty.