A Hakka woman in a traditional hat often worn in the fields. Guangzhou, Guangdong Province. PHOTO BY JOAN LEBOLD COHEN.
The Hakka dialect group is very widely dispersed in the southern part of China due to different migration waves of different periods. As a result of historical sound changes and contact with other dialect groups, the unique criterion for distinguishing Hakka from other non-Hakka dialects is still unsettled.