Developed Country? No, We Are Always Evolving!

Jiang Yueyuan traveled to a modern different world and became the emperor of the Yanxia Empire. However, the Yanxia Empire had internal and external troubles. Others had aircraft, missiles and aircraft carriers. The Yanxia Empire was all backward equipment bought from other countries at high prices. Even the equipment of the vassal kings was better. Fortunately, he has an entire arsenal of technology from Earth. A few years later, when other countries invaded again, they suddenly discovered... Soaring in the sky are fifth-generation aircraft; rushing on the ground are torrents of steel; and sailing in the water are nuclear-powered aircraft carriers. You told me this is a developing country? ? ? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.