First is that Thailand is long. First to have regard and respect for each other, which is an expression of greeting. Thank you to apologize or say goodbye
As a courtesy to respect Thailand's legendary long. The respect shown to have regard. And respect Which expresses the meaning to greet or say goodbye to you, sorry.
Wai is a Thai etiquette is passed for a long time. Wai is the respect. And honor one another. Which expresses the meaning to greetings, thank you, sorry, or say goodbye.