Iron-Blooded King with Different Surnames

Before Lin Chen traveled through time, he was a young engineer who graduated from the National University of Defense Technology. He was proficient in machinery, materials, basic chemistry, military theory and project management. He was also a historical military enthusiast. The son of a military family who traveled to the northern border of the Great Yan Dynasty had just turned sixteen. He was frail but had clear eyes. Both of his parents died, and he was about to be forcibly recruited to take his place and sent to the most dangerous "Broken Leaf City" to guard the border. From a modern man who only wants to protect himself, he gradually grows into a responsible ruler who cares about the world. He is decisive in killing, but he attaches great importance to the people and his own people. In the end, he became the strongest king of the opposite sex, awakened to hold the power of the world, and fell drunk in the lap of a beautiful woman.