The fictional Daxia Dynasty entered the heyday of the coexistence of steam and mechanism technology due to its mastery of "Tianshu" (an energy technology derived from ancient meteorites). Under the imperial city, huge gears rotate endlessly.
· Core contradiction: The old aristocracy monopolizes "Tianshu" technology based on blood, the emerging industrial and commercial class is eager to break the barriers, and the people at the bottom are struggling to survive in the shadow of the gears.