Celebrating with monks is about doing something good. The major birthday celebrating trends of Thai people are likely to be offering food to the monks and having activities at the temple. Number of monk does matter especially with some people who invite monks to come over to their houses. It is sort of belief, which later becomes rules, that the number of monks will bring prosperity to the birth owner. For instance, some people believe three monks are good, some say five, or nine. And some people invite monks the same number with their ages. The beliefs are still various in different areas