Rebirth in the Star Sea Era, Destroying Stars with One Machine

The Federation was in civil strife and the government collapsed. Xiao Qiang and the team he led fell into disputes and became victims of the war. As a survivor, he unexpectedly returned from forty years later and became the head teacher of the first-year Class D of the Mecha Department of the Federal Eiffel Academy, a mecha driver and designer, and an instructor in the military camp. Can he rewrite the ending of the college's collapse?