ecret Service of the Imperial Court was one of the last kung fu/swordplay films to be made at Hong Kong's Shaw Bros. studio. Set in the Ming Dynasty, it makes excellent use of the studio's vast array of sprawling sets and colorful costumes to give a real period flavor. It has a good cast, lots of large-scale fight action and an exciting storyline about a conflict between an honorable officer and a corrupt Eunuch.

Overview from themoviedb.org