Jishiteng, also called Chinese fevervine, is a kind of herb that has been used for ages for its amazing health benefits, such as relieving rheumatism, abdominal pain, etc. Called "chicken dropping soup" in Chinese, Jishiteng sweet soup is made with ground fevervine leaves, flour and sugar and it is usually cooked with coconut milk or ginger water. You should definitely try it when you visit Haikou.