Zhenguan Tunnel: from the Golden Age to the Sea of ​​Stars

Lin Chen, a modern young man, accidentally opened a time and space channel and fell into Chang'an four years ago. With nothing, he relied on knowledge spanning thousands of years to establish himself in the market by purifying refined salt and boiling icing sugar. He then improved the curved shaft plow and created a new waterwheel, all of which solved the crisis of spring drought in Guanzhong in one fell swoop. From a small official working as a refugee to being in charge of agriculture, he made steady progress, facing the sage Li Shimin, cultivating mulberry trees, improving warehousing, and consolidating the country's foundation. We do not engage in black technology, but only make pragmatic innovations. We planted the seeds of science and technology in the prosperous era of Zhenguan, so that the glorious Tang Dynasty not only dominates the Kyushu, but also moves towards the vast sea of ​​​​stars.