Wai's magnificent Thai, we have three levels. The first level with age or less senior or rate such as brother or friend by hands and bowed to the thumb to the chin. The second level is used for a more senior. As parents, teachers, elders by hands and bowed to the thumb to the tip of the nose. The final level is to hold hands and bowed to the thumb to between the eyebrows. This level we use wai in the