‘The Mystic Nine Tetralogy’ is a set of four side-stories based in the same backdrop as The Mystic Nine. The stories are independent, but each focuses on one of the key characters in the original show (Huo San Niang, Chen Pi Ah Si, Lieutenant Zhang, and Er Yue Hong). They can be watched in no particular order and are often set as sequels to The Mystic Nine. They are certainly better understood if watched after the main series in order to be familiar with the characters and family history.

‘Flowers Bloom in February’ is the story of Er Yue Hong.

In 1930s China, during the Sino‑Japanese War, Er Yuehong stages an opera performance atop a Japanese-guarded tomb to secretly infiltrate and retrieve a hidden national treasure. Blending theatrical artistry with cunning, he distracts the occupying soldiers, covertly excavates a tomb tunnel, and successfully transfers the relic—all while showcasing bravery, patriotism, and his tomb-robbing expertise.