Complex sentence: Nanman 南蠻 (meaning southern barbarian) was the rebel tribe in southwestern China during the Three Kingdoms Period, they were miao and some other tribes all living in one areas that was led by Meng Huo who was a miao leader.
Split into simpler sentences: Nanman 南蠻 (meaning southern barbarian) was the rebel tribe in southwestern China during the Three Kingdoms Period. They were miao and some other tribes all living in one areas that was led by Meng Huo who was a miao leader.