Yi syllable vox

It marks the secondary-high pitch pattern.

“Vox” is the romanized label for this Liangshan Yi syllable, not an English word.

Older Yi scripts varied by region and used mostly ideographic signs (symbols for ideas); bimo (Yi priests) transmitted religious, medical, genealogical, and ritual texts. Accounts differ: one credits Aki; the oldest securely dated surviving monumental inscription is on the Chenghua Bell (1485). The modern Liangshan script grew from Northern Yi forms, was devised in 1974 and officially promulgated in 1980 to promote literacy and public writing; it later appeared in schoolbooks, literature, and newspapers.