C1143 Engine with a Weight of 10

Whether it's mapping replicas or self-developed, and so on, as long as there's one, the country won't waste money anymore, and the big push technology is complicated, not so easy to get.

Under such circumstances, the research was in progress and found a blank breakthrough point.

Large units in the country, key units, were doing big push, middle push, and no one was doing it. As for middle push