Pinghua is a pair of Sinitic languages spoken mainly in parts of Guangxi, with some speakers in Hunan. Pinghua is a trade language in some areas of Guangxi, spoken as a second language by speakers of Zhuang languages. Some speakers are officially classified as Zhuang, and many are genetically distinct from most other Han Chinese. The northern subgroup is centered on Guilin and the southern subgroup around Nanning. The Southern dialect has several notable features such as having four distinct checked tones, and using various loanwords from the Zhuang languages, such as the final particle wei for imperative sentences.