Yaryu is a custom of Ogwangdae (mask dance drama) that was first performed in the inland areas of Gyeongsangnam-do but spread to Suyeong, Dongnae, and Busanjin. Yaryu literally means playing in an open field. This mask play was performed by non-professionals like villagers. Dongnae Yaryu was performed on the evening of the full moon of January 15 on the lunar calendar, supposedly to pray for a good year for crops. Dongnae Yaryu was said to have been started about 100 years ago after its cousin performed in nearby Suyeong. Now performed as an entertainment, it is composed of four acts: leper dance, gag exchanged between a yangban (nobleman) and Malttugi (servant), Yeongno (therianthropic character)’s dance, and old couple’s dance. Members of the troupe march to the site of performance while playing music. The main subject of the performance is a satire about nobles. The masks are made of gourds. The chin part of the masks is made movable, moving upward and downward while its wearer delivers a gag. The play is performed to the accompaniment of percussion instruments, which play exorcist music. Malttugi’s dance and nobleman’s dance are the leading performances. Obangsin (Deities of the Five Directions)’s dance, satire about deprave monks, and lion dance -- which are usually included in Ogwangdae mask dance drama -- are not performed in Dongnae Yaryu.