I will explain on the part of participants and sampling method. We choose to study from a group of people in the area of Ban Du sub-district, Chiang Rai province. In addition to the participants, there were also other sampling methods.We will randomly assign 60 people who come from the different location at Ban Du sub-district. They are people commute regularly in Ban Du sub-district, Chiang Rai province. And the last we will take sampling method to record in our research.