Complex sentence: Cao Cao was also interested in alchemy and the art of longevity--he sought help from, and met various "fangshi" s, including Zuo Ci, Hua Ta (華他), Gan Shi (甘始) and Xi Jian (郄儉).
Split into simpler sentences: Cao Cao was also interested in alchemy and the art of longevity. He met and sought help from various "fangshi" s, including Zuo Ci, Hua Ta (華他), Gan Shi (甘始) and Xi Jian (郄儉).