The Yin Yang Master is a Chinese fantasy film directed by Li Weiran and based on the novel "Onmyoji" written by Japanese author Baku Yumemakura. It stars Mark Chao as the lead character Yin Yang Master Qingming, Deng Lun as the demon prince Long Ye, and Wang Ziwen as the human princess Bai Ni.
The film is set in a fictional world where humans and monsters coexist but are separated by a magical barrier. Qingming is a powerful Yin Yang Master who possesses the rare ability to communicate with both humans and monsters. He is summoned to the imperial city to solve a series of mysterious deaths of important officials.
As Qingming investigates the case, he discovers that the deaths are caused by the demon prince Long Ye, who is trying to retrieve the Scaling Stone, a powerful artifact that can break the barrier between the human and monster worlds. Qingming discovers that he is the only one who can stop Long Ye and prevent a catastrophic war.
Qingming embarks on a journey to different worlds to learn more about the monsters and their culture. Along the way, he meets Bai Ni, who becomes his ally in the fight against Long Ye. Qingming also discovers that he is a hybrid of human and monster, and he must embrace his true identity to defeat Long Ye.
The film features stunning visual effects and action-packed fight scenes. It also explores themes of identity, belonging, and acceptance. The Yin Yang Master has been well-received by audiences and has grossed over $155 million worldwide.