Developed by Western missionaries working among the Chinese diaspora in Southeast Asia in the 19th century and refined by missionaries working in Xiamen and Tainan, it uses a modified Latin alphabet and some diacritics to represent the spoken language. After initial success in Fujian, POJ became most widespread in Taiwan and, in the mid-20th century, there were over 100,000 people literate in POJ. A large amount of printed material, religious and secular, has been produced in the script, including Taiwan's first newspaper, the "Taiwan Church News".