I Got a System in the Tang Dynasty and Married Empress Changsun and Seven Princesses

Lin Tian wakes up to find himself transmigrated to the Zhenguan era of the Tang Dynasty, bound to an utterly unreliable [Empire-Building System]. His very first mission is to marry seven princesses!

Faced with a mission that could hardly be more suicidal, Lin Tian simply blocks it. The throne? Making money and building infrastructure is far more appealing! He activates the [Myriad Worlds Delivery Platform] and orders a cement formula, along with potato and sweet potato seeds. His goal is clear: make a billion in the Tang Dynasty first!

However, the System's wild claims have already spread. In a fury, Li Shimin storms over with his sword, vowing to chop the madman who had blasphemed the empress and princesses into a thousand pieces.

But when Li Shimin kicks open the shabby wooden door, he finds not the lecherous lunatic he expected, but a composed young man directing refugees as they lay a road. Beneath his feet is a smooth, hard cement road unlike anything seen before. Beside him are potatoes and sweet potatoes, miraculous crops said to yield dozens of dan per mu and save countless lives...

The furious Heavenly Khan is stunned. The treasured sword in his hand clatters to the ground. A moment later, trembling, he asks the question that leaves every high-ranking official accompanying him dumbfounded:

“Immortal... Immortal... I, I would make you chancellor of the Tang Dynasty... Would you, Immortal, be willing to accept the position?”

Armed with knowledge far ahead of its time, Lin Tian thrives in the Tang Dynasty. He offers up immortal grain and saves countless lives; makes cement to build roads and cities; and improves weapons to strengthen the army. From the perilous Alliance on the Wei River to the trials of war on the northern frontier, he rises step by step from a country scholar to a duke, marries a princess, takes control of the reins of power, and becomes the empire's most illustrious minister.

Yet beneath all the favor and glory, undercurrents are surging.