In an effort to address this, an Iu Mien Unified Script was created in 1984 using the Latin script, based on an earlier orthography developed in China. Unlike the Vietnamese language, this alphabet does not use any diacritics to distinguish tones or different vowel sounds, and only uses the 26 letters of the ISO basic Latin alphabet. This orthography distinguishes 30 initials, 128 finals, and eight tones. Hyphens are used to link adjectives with the nouns they modify. The alphabet is similar to the RPA used to write the Hmong language and the Hanyu Pinyin transcription scheme used for Chinese.
In China, Iu Mien is spoken in the following counties (Mao 2004:302-303). There are 130,000 speakers in Hunan province (known as the Xiangnan 湘南 dialect), and 400,000 speakers in Guangxi, Yunnan, Guangdong, Guizhou, and Jiangxi provinces (known as the Guangdian 广滇 dialect).