Famine Age: I Have a Sign-In System

New works are released. Welcome to Tomato Novel to read my works. I hope you will like them. The protagonist Lin Yang traveled through time and became a rural child in 1961, with a sister who was as thin as a stick due to hunger. Their parents died unexpectedly while building a reservoir. Lin Yang has obtained time travel benefits and has a sign-in system. He can obtain various materials, skills, tools, weapons, drawings, and technology. In the early stage, he improved his life and helped fellow villagers. In the later stage, he donated a large amount of materials and technology to the country, helping the country to rise. Various industries developed rapidly, and the Dragon Kingdom entered the interstellar era.