The Great Zhou Emperor's Secret Travels: The Dragon Tours the Realm

(A power fantasy, though the early setup is lengthy, with wars of annexation. Inspired by "Long You Tianxia" and "Kangxi’s Private Visits", this novel is also called "Yuwen Yong’s Secret Travels and Romantic Adventures".) He commands the world by day and sleeps in a beauty’s arms by night. A modern engineer from a thousand years in the future finds himself transported into the body of Emperor Wu of Northern Zhou, Yuwen Yong. He eliminates treacherous villains and reforms the imperial court. Though he has no golden finger from the future, he uses the knowledge of later generations to make Northern Zhou prosperous and its people strong, then takes one step at a time toward conquering Qi and Chen... and unifying the realm.

He has two talented men at his side: Di Renjie and Zhao Yu. Together, they travel the realm incognito to inspect the people’s lives.

“Huaiying, what do you think?”

“Your Majesty, my surname is Di and my given name is Renjie. I am from Bingzhou, and I hold the offices of Tong Zhongshu Menxia Pingzhangshi and Commissioner for Reorganization, in addition to serving as Grand Governor of Youzhou. By imperial decree, I am an envoy charged with overseeing all military and civil affairs in Youzhou, with authority to act as I see fit. Wherever I go, it is as if Your Majesty were there in person. But even I don’t know what to make of this matter.”

He is also utterly devoted to his wife.

“Xuewu, whatever you want, I’ll give you.”

“Wenyong, I want a son.” And so, they travel the realm while making a baby.

In the end, Yuwen Yong becomes a carefree emperor for the ages...