Answer:
So aside from the massive statue army — which I would really count...
The Qin dynasty had a hand in the invention of the crossbow, the multiplication table and even the idea of LEGALISM.
Essentially, this dynasty was hold to witnessing a weapon that basically Revolutionized weaponry when it came to ranged combat. Then mastered the multiplication table — which still helps us today, keep in mind! Then defined legalism, which essentially allowed them to effectively define law and even create a structured system for that law.
I hope that helps — and hello again!