Taiwan under Japanese rule
There are both colloquial and literary registers of Taiwanese. Colloquial Taiwanese has roots in Old Chinese. Literary Taiwanese, which was originally developed in the 10th century in Fujian and based on Middle Chinese, was used at one time for formal writing, but is now largely extinct. Due to the era of Taiwan under Japanese rule, a large amount of loanwords from Japanese also appear in Taiwanese. The loanwords may be read in Kanji through Taiwanese pronunciation or simply use the Japanese pronunciation. These reasons makes the modern writing Taiwanese in a mixed script of traditional Chinese characters and Latin-based systems such as pe̍h-ōe-jī or the Taiwanese romanization system derived from pe̍h-ōe-jī in official use since 2006.