Destroy China? I'll Just Move Out of the Iron Legion

Alien civilization invades and destroys a country with one ship! The United States fell in fifteen days and announced its surrender, and European countries fell one after another. The Bangzi Country and the Japanese Country directly rebelled and turned their guns towards China! China was isolated and helpless and fought to the last soldier. Jiang Zhe is reborn with the system! If the Bangzi Kingdom dares to rebel, I will destroy your flag first! Dare a small island country to rebel? I am directly a high-energy particle cannon. What? Aliens have mechas? I will move out of the Iron Legion directly. May I ask how you should respond? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.