Exile at the Beginning, from Salt Prisoner to Military Marshal

[Travel + Save Mother + Convict and Exile + Rise of the Border Army + One person is better than ten thousand people] After waking up from time travel, Lin Chen discovered that what this ancient dynasty lacked most was not food, but salt. Due to lack of salt all year round, my mother was swollen, convulsed and comatose, and her life was hanging by a thread. The doctor told him: If there is no more salt, the person will be dead. But official salt is as expensive as gold, and ordinary people cannot afford it. Desperate, Lin Chen secretly followed his father to boil salt on the beach. Modern knowledge of chemistry allowed him to boil fine fine salt easily, and his mother finally drank the salt water and saved her life. However, the salt dealer was jealous and reported it, and the government broke into the house. "If you make more than three kilograms of sea salt privately, you will be exiled for three thousand miles." Lin Chen was sentenced to three years of exile and dragged his shackles onto the desolate northwest road. On the way, he encountered enemy plunder and the guards fled in all directions. He was inexplicably dragged into the border war. There is no way out but to survive. He joined the frontier army and started from the lowest level as a gang leader. Others use knives to chop people, but he fights with his brains. Dig trenches, build city defenses, improve firearms, and defeat more with less... In one battle, ten people broke through a hundred. In World War II, a hundred men captured a thousand. During the third battle, he stood at the top of the city, with mountains of enemy corpses and seas of blood beneath his feet. From an exiled prisoner to a corps commander, from a lieutenant to a general, from a frontier official to a marshal of the world's soldiers. In the court hall, the emperor held his hand and said: "My country is half as big as yours." But Lin Chen just remembered that evening many years ago - he held the bowl of salt water and fed it to his mother's mouth. That bowl of salt saved a life. Later, the salt he controlled fed the entire world.