Tongyong Pinyin
Chinese language romanization in Taiwan differs somewhat from in the mainland, where Hanyu Pinyin is used almost exclusively. A competing pinyin system, Tongyong Pinyin, had been formally revealed in 1998 with the support of then-mayor of Taipei Chen Shuibian. In 1999, however, the Legislative Yuan endorsed a slightly modified Hanyu Pinyin, creating paralleled romanization schemes along largely partisan lines, with Kuomintang-supporting areas using Hanyu Pinyin, and Democratic Progressive Party (DPP) using Tongyong Pinyin. In 2002, the Taiwanese government led by the DPP promulgated established Tongyong Pinyin as the country's preferred system, but this was formally abandoned in 2009 in favor of Hanyu Pinyin.