I Command the Army of Thermal Weapons to Attack Heaven

Single male protagonist + dual female protagonists + parallel universe invasion + fantasy + science fiction It is not an urban cultivator. The star field where the earth is located has been invaded by immortals from other star fields. The cultivation civilization is not as good as the invaders. The remaining power can bring the earth into other star fields. The earth will use the developed technology in this star field to fight back to the galaxy star field and eliminate all the immortals.