"MO PHI" are the spirits doctors. In Thailand many spirit doctors help people to get chance, to gain the heart of a desired mate, to get rid of ghosts, to reveal future, to get rid of curses. These spirit doctors can be ordinary persons who have spirit power ("PALANG CHIT" - พลังจิต) or also monks. But monk hierarchy does not tolerate those monks.

The annual biggest concentration of spirit doctors happens each September in Phuket and South of Thailand during the Vegetarian festival. Many men pierce their body with sharp objects or walk on fire. They feel no pain and show the power of the spirit that inhabits their body. This festival is linked to Chinese religion and beliefs.