Cheng Kun

Cheng Kun (成昆; Chéng Kūn; Sing4 Gwan1), nicknamed "Hunyuan Thunderbolt Hand" (混元霹靂手), is the primary antagonist in the novel Heavenly Sword Dragon Sabre and a formidable martial artist. He seeks to destroy the Ming Cult after his junior, whom he had a crush on, married Yang Dingtian and committed suicide to join her husband. He disguised himself as a Shaolin monk called Yuanzhen (圓真; 圆真; Yuánzhēn; Jyun4-zan1) and successfully stirred up conflict between the Ming Cult and the six major orthodox sects through a series of machinations. He pretended to accept Xie Xun as his apprentice and then killed Xie's family in cold blood before disappearing. Although he dislikes the Mongols, he still reluctantly becomes an adviser to Chaghan Temür and helps him devise plans to eliminate the Ming Cult. As the story progresses, he becomes corrupted by his lust for power and plots with Chen Youliang to dominate the wulin (martial artists' community).