This paper studies two special tonal phenomena of the Haiyan dialect: the influence of aspirated stops on tones, and the tonal split of the Yangshang tone in relation to initial devoicing. There are three parts in this paper. Part one is a brief description of the sound system of Haiyan; Part two addresses the influence of aspirated stops on tones; and Part three discusses the tonal split of the Yangshang and also the devoicing of the initial stop.