Anti-Japanese Primitive Empire

There are 100 primitive people at the beginning, all equipment depends on fighting, and girls all rely on grabbing. Chu Xuan traveled to the anti-Japanese era and obtained the Ark system. The backyard was connected to the world of primitive people, and he lit up the technology tree by killing people. Little devil, have you seen the Fengshen Pterosaur Base? Never seen it? Have you seen the Titanosaurus base? Foreign devils, have you ever seen a steel castle? Never seen it? Have you ever seen atomic bomb-proof clothes? Gentlemen, have you seen the primitive army? Never seen it? Have you seen the dinosaur army? Since acquiring the Ark system, Chu Xuan has formed an army of dinosaurs to defeat all kinds of devils, ravage domestic forces, and form his own empire. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.