Dr. Sumittra Suraratdecha is a Lecturer at Mahidol University at the Research Institute for Languages and Cultures of Asia (RILCA). She obtained a Ph.D. in Linguistics from University of Hawaii at Manoa and she is specialized in sociolinguistics. Dr. Suraratdecha is also teaching English Chinese Linguistics and Lexicography Anthropological Linguistics. Her interests include, study of Tourism Development and Ethnic People in Thailand, Lue Xishuangbanna and Nan to link roads and ensure sustainable tourism in Thailand. She also studies and researches linguistics in ethnic Palaung in Kengtung, Myanmar and Yunnan in China.