Every year in May, there is a big festival in Yasothon. It is called ''Boon Bang fai'' It is an old tradition of Yasothon, and well-known for both Thai people and foreigners. On the first day of this festival, it is fascinating with many beautiful processions for example : ''Ram-Soeng Procession'' with beautiful dancers, Rocket Procession and Flowers Procession. In former time, this festival was for respecting Phayathan who is the god of rain in the folktale of Esarn people. It is a love story about Phadaeng-Nangai who are well-known in Esarn. Northeast of Thailand