This paper examines the changing geography of written scripts for the shrine of Na Tuk Kong, a popular deity in Malaysia, from Hokkien, or Lan-lang-oe, to Mandarin. The written scripts used on the deity tablets of Na Tuk Kong usually show an inclination toward colloquial expressions from the Hokkien language, and have been shown to be a well-illustrated example of an ethnic marker that can be used to distinguish Hokkien speakers from other immigrants from China, such as the Hakka and Cantonese immigrants and their descendants, in the Malay Peninsula. The pan-Chinese nationalist movement since the 20th century has led the Hokkien speakers to adopt Mandarin as their lingua franca but Hokkien expressions, especially in Romanized spelling, have persisted in some areas such as on commercial signboards, while Hokkien linguistic expressions in the aforementioned religious field have also been retained. Nevertheless, the acceptance of the mass manufactured deity tablet and other appurtenances in the recent decades have demonstrated a tendency of the written scripts for the Na Tuk Kong shrine to move from Hokkien to Mandarin among Hokkien speakers. By examining the written scripts on sign boards, banners, tablets, and couplets of the Na Tuk Kong shrine in the Hokkien dominated area of Northern Malaysia, the study reveals the changing geography of the Na Tuk Kong shrine from Hokkien to Mandarin in the urban commercial and newly-developed suburban districts, while at the same time, signage with a stronger indicator of Hokkien ethnic markers tend to be either larger in size or related to the temples nearby, a characteristic of a longer history of development and more followers.