Mao Hun, a Chinese martial arts grandmaster, forged the Mao Family Juhe Fist, an unarmed combat style merging samurai swordsmanship principles with adaptability and precision. His philosophy fused tradition and practicality, shaped by his relocation to Japan alongside friend-rival Cao Fusheng, where he refined his art for future generations.

As Mao Lan’s grandfather, he subjected her to relentless training from childhood, pitting her against wild beasts, street gangs, and grueling trials to forge resilience. His methods intertwined calculated deception—such as covertly entering her into the Prime Mat tournament under fabricated circumstances—to bind her participation to a vow: answers about her parents’ mysterious fate.

His lifelong rivalry with Cao Fusheng, creator of Cao Family Bajiquan, intensified when the terminally ill Fusheng sought aid to dismantle the corruption of their legacies by his son, Cao Da-Hen. Mao Hun strategically orchestrated Lan’s clash with Fusheng’s granddaughter Chunyang, framing their duel as a battle to purge commercialization from their arts. Chunyang’s defeat became a symbolic triumph for tradition.

Operating as a shadowy mentor, Mao Hun prioritized martial supremacy and familial legacy over emotional bonds, drilling Lan in technical precision and tactical cunning. His guidance often veered into manipulation, yet his machinations culminated in Lan’s victory over Chunyang—honoring Fusheng’s dying plea and cementing the Mao lineage’s enduring influence.