Masong is the Thai term for Taoist spirit mediums, which derives from mah, the Thai word for ‘horse’, and song, which means ‘riding’, and that reflects how these individuals serve as vessels for spirits, much like a rider on a horse.

During special occasions, most devotees wear white loose-fitting fisherman pants, whilst Masong go around barefoot and typically wear a colourful apron in a colour that symbolizes sacredness and their connection to specific deities.

Only single, unmarried individuals, regardless of gender, can become Masong, and some females wear a kimono style dress, rather than an apron. Masong carry attributes, such as dragon whips, axes, and swords, along with square, black or yellow banners, called command flags.

During rituals, Masong enter a trance-like state, in which they are believed to be possessed by the spirit of a Taoist deity. While under possession, some mediums shake their heads vigorously and may pierce their bodies with skewers, an act believed to purify their body and soul.