The New Song Dynasty: from Yashan to the Sea of ​​Stars

A graduate student at the Naval Academy in the 21st century, specializing in sea power theory and ship engineering, traveled through time and became the 7-year-old Zhao Bing, the last emperor of the Southern Song Dynasty. Obtained in naval battles. "Civilization Fire" system: "Civilization Value" (from population growth, territorial expansion, technological breakthroughs) can be consumed to exchange for limited modern knowledge (non-physical)