Transmigration + Southern Song + farming + technological advancement + industrialization enthusiast + multiple heroines
Modern man Zhao Jun accidentally transmigrated into the late Southern Song Dynasty.
Because Song Taizu had seized the throne through treachery, taking advantage of the orphaned children and widowed women of the Chai family, he launched the Chenqiao Mutiny and donned the imperial robe. The Chai family's curse caused the children born to many Song emperors' consorts to die young, even when they survived childbirth.
After Empress Han, wife of Emperor Ningzong, gave birth to his second son, she feared he would suffer the same fate as the firstborn. To ensure he could grow up safely and escape the curse, she secretly entrusted a trusted palace maid with taking the child out of the palace to raise him.
Spoiled by the maid who raised him, he grew into a wastrel. After attempting to harass the daughter of a wealthy family in the capital, he was targeted for assassination. In his panic, he fled into the mountains and collapsed, where he was rescued by the Chen sisters, who were shunned by their entire village and branded bearers of bad luck and ill-fated widows. To repay them for saving his life, he decided to marry both sisters and enjoy the blessings of having two wives. All he wanted was to tinker with a few inventions, lie flat as a country squire, and live out his life in peace.
But in these chaotic times, the Jin and Mongols took turns attacking the weak Song, leaving the people in misery. Armed with a modern way of thinking and knowledge a thousand years ahead of its time, Zhao Jun built firearms, steam engines, and more, pushing history forward and changing the fate of the weak Song, which would otherwise have been trampled under the Mongol hooves. He even made the nomadic tribes into a people who could sing and dance.
Awake, he wielded the power of the realm; drunk, he rested on the laps of beauties.