Gears and Mortises and Tenons

The heroine, a mechanical genius who returned from studying in the West, accidentally inherited the ancestral "Gongshu Secret Records" and discovered that she was a descendant of a branch of the Moh family. The gentleman who appears to be running a watch shop is actually a secret agent of the Qing court. The two of them are involved in the struggle for power by restoring the "Wooden Cow and Flowed Horse" drawing. The steam train collides with the automatic defense arrow formation, and the pocket watch gear drives the machine beast - the peak showdown of black technology from the East and the West!