The City, the Island Kingdom, and a Future-Tech Superpower

[Arms + cutting-edge technology + one heroine + space] Not long after arriving in this world, Wang Yu becomes king. He successfully activates a livestream System. The beginner's gift includes a super factory, a wealth of talented people, and 100 billion livestream points. Strategic nuclear submarines? Buy them. Attack submarines? Buy them. Stealth frigates? Fifth-generation stealth fighter jets? Buy them. The Tianzhu Kingdom dares to bully the Dongqin Kingdom? I'll show Tianzhu what a war of national resurgence looks like. You say our country is small and our population is low? No problem. We can encourage people to have more children. A small territory isn't a problem. We can expand into outer space. Many years later, the Dongqin Empire looks down on this planet from outer space.