Children cook food in a village of Jola people, in Casamance, southern Senegal, Feb. 4, 2014. The Jola (Diola, in French transliteration) is an ethnic group in Senegal, where they predominate in the region of Casamance. The Jolas are believed to have migrated to Casamance before the 13th century and kept a traditional lifestyle till now. (Xinhua/Tai Jianqiu)