Mecha to Simplicity

In 2020, the Sarran people launched an undeclared war on the Solar System, and Tang Shijie, the leader of the third-rate regiment's garrison, was involved. It was not so much the war of the Sarran people against the Solar System people as it was a self-defense war of the Solar System people. The false appearance was revealed, and the difference was a despairing military power gap.