Cambodians traditionally greet each other with palms together, in a manner of prayer. They lift up their hands to the chest level and bow slightly. This is called Som Pas. In general, the higher the hands and lower the bow, the more respect is being shown.
During the greetings, your facial expressions and eyes contact are also important to show respect and relationship between you and the person that you are greeting to. Therefore, keeping a smile face during greetings Khmer people is a good mode to show hat you’re willing and satisfying greetings them.