Monkeys may be cute and friendly, but in any area where unaware tourists have corrupted them, they expect to get food from humans. Though mostly it'll refer to Chinese tea, asking for Na am cha can give you any of these depending on what the restaurant serves. It's highly unwise to rely on this. You can pick up fruits, snacks and cooked food from hawkers at most stations. In April 2009, fighting broke out between Thai and Cambodian troops on territory immediately adjacent to the 900-year-old ruins of Cambodia's preach Vihear Hindu temple near the border. Dermatology and fertility treatments are also, with dental care, among the most popular specialities in demand by international medical tourists. A protest rally was also held at Chiang Mae University. In reality, smiling is a very subtle way to communicate, and to those who live in Thailand, a smile can indicate any emotion — from fear, to anger, to sadness, to joy, etc.