Gonggu

Everything Is True Within the Range. the Protagonist Uses Cannons and Weapons with High Firepower.

Range is truth, caliber is justice. Is there any kind of hot-tempered protagonist with a large weapon?

There Are Modern Weapons and Weapons in Time Travel

The heroine is very powerful in time travel and has space powers and an arsenal. You can wear it or wear it with your soul [strong men and strong women]

Lead a Modern Army to Attack Another World

Looking for More Realistic Military and Industrial Novels

Please Ask the Protagonist to Have an Army and Develop It in Ancient Times

The Protagonist Creates His Own Power and Conquers the World. He Has an Overall View and Is Decisive in Killing.

Travel Through History + Use Modern Knowledge + Known History

Don't be systematic, don't be fantasy