My Kingdom (2011) on Netflix

In the 19th century, the Prince Regent of the Qing Dynasty orders the mass execution of the entire Meng clan. Before his beheading, the leader vows that his family will avenge this travesty of justice. Awaiting his death, a five-year-old Meng boy named Erkui bravely sings an aria. The power and purity of his voice touches the opera star Master Yu and his seven-year-old pupil Guan Yilong. Master Yu rescues the boy and the two orphans become brothers. Years later, Master Yu wins the coveted golden "The Mightiest Warrior" plaque from the Prince Regent, but subsequently loses it in a duel with his archrival Master Yue. Banished from the stage upon his loss, Master Yu spends his time training the two brothers in the village. When the boys grow into men, they set off for Shanghai to pursue revenge. Once they reach Shanghai, they quickly defeat Master Yue, not only reclaiming the plaque but also taking over Yue's opera troupe. Almost overnight, they become sensations of the Shanghai opera scene along with Master Yue's former lover, Xi Mulan. But soon, their collective pasts catch up with them and all three end up in a complex web of love, lust, deceit, betrayal and revenge, ultimately ending in tragedy.