That Fiery Girl (1968)

Mostly awful Swordplay film from 1968 with Cheng Pei-Pei that feels like a school play on the Shaw Brothers sets, and seems to have completely missed the advances in the genre that had been made in the previous few years... up until the last 20-30 minutes, when it suddenly gets a lot more interesting, dramatic and violent. It felt like a different director had taken over - like Chang Cheh had, in fact. Anybody know if there's a story there?