The 5th International Conference in Evolutionary Linguistics (CIEL-5) will be held during August 17-19, 2013 at The Chinese University of Hong Kong. CIEL is an annual conference for researchers to report and discuss the latest progress in evolutionary linguistics. From an interdisciplinary perspective, evolutionary linguistics interacts with anthropology, archeology, biology, linguistics, neuroscience, and psychology. Collaborative research work among these areas will make new contributions to evolutionary linguistics, both in breadth and depth. Therefore, there is much anticipation of enhancing international interaction and interdisciplinary collaborations via this conference. The earlier ones in Guangzhou, Tianjin, Shanghai, and Beijing have been held in the same spirit.