Mae Hong Son is located in North West Thailand, 180 km west of Chiang Mai. The town holds, every year, during the school vacations, between end March and start April, a Buddhist ceremony - Poi Sang Long. Unlike other ceremonies in the country, this is an ordination ceremony.

Group of youngsters, 7 – 14 years old, are authorized to start learn the main principles of Buddhism. The festival lasts for three days. In the first day the boys shave their heads, wash and anoint their body with unique water and dress magnificent cloths. At this stage they turn to Sang Long (jewel sons).

On the second day, a colored parade takes place in which the monks get offerings. In the third day, the parade continues and the boys are taken to the shrine to a magnificent ordination ceremony.

The festival and the ceremonies are the most beautiful ceremonies in the north area. They attract, every year, thousands of locals and tourists.