In the seventeenth year of Chongzhen, the Ming Dynasty fell. Modern young man Lin Yang accidentally traveled through time and became the first emperor of the Southern Ming Dynasty - Hongguang Emperor Zhu Yousong. Faced with the crisis of national subjugation, in which powerful ministers were in power, warlords were separatist, and Manchu cavalry were marching south, he resolutely embarked on the road to save the nation and survive.
Relying on his foresight of the direction of history, he reorganized the imperial court, gathered military power, and first settled the south of the Yangtze River, and then restored the Central Plains. When the bright sun and moon flag once again fluttered over the city of Beijing, his eyes were already set on the farther future.
He fought against all opinions, introduced Western learning, reformed the imperial examination, and built the first steam engine in the Ming Dynasty workshop. New firearms, ocean-going fleets, and technological revolutions have brought unprecedented changes to China.
From Nanjing to Beijing, from the Forbidden City to the Seven Seas, he led this ancient empire to complete an epoch-making transformation. When the roar of steam resounds throughout the world and the sun and moon flags fly in every corner of the world, he has become the leader of this new era - the steam monarch who rules the world.
This is an epic story in which modern souls save civilization and use technology to reshape the world.