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When he finally left, Great Zhou had already completed modern industrialization, even launching space satellites into orbit, and the production of fighter jets and aircraft carriers was hardly worth mentioning; otherwise, achieving unification and peace throughout the Four Seas would have been difficult.
With such a technological foundation, after over ten thousand years of development, even if a super-civilization could not have emerged, it shouldn't have regressed, right?
But now...
The group of people from before, including Su Shaoqing, were all dressed in ancient attire, and the weapons they used were cold weapons like knives, spears, swords, and halberds. No one pulled out a machine gun to rattle off shots, nor did anyone carry rocket launchers to bombard around, not a hint of modern technology in sight.
What's going on?
How did this bunch manage to ruin the technological system he had established?