The Blade in the Box Locks the Spring and Autumn Period

The "Ji Qiao Si" of the Dayin Dynasty once dominated the world with its strange weapons. Later, the "Thousand Ji Bian" machine technique lost control and caused chaos, and was banned by the imperial court. A hundred years later, the remnants of the Jiqiao Division reappeared, carrying the blueprints of the "Tiangong Lock" that can control thousands of armies. Undercurrents of imperial spies, Jianghu sects, and black market merchants are surging, and a battle surrounding the secrets and power schemes of the agency quietly begins.