Khun Sa (Burmese: ခွန်ဆာ, ), also known as Chang Chi-fu (Chinese: 張奇夫; pinyin: Zhāng Qífú; Thai: จันทร์ จางตระกูล, Chan Changtrakul; 17 February 1934 – 26 October 2007) was a Burmese warlord. He was born in Loi Maw of Mongyai. He was also dubbed the "Opium King" due to his opium trading in the so-called Golden Triangle. He was also the leader of the Shan United Army and the Mong Tai Army.