Li Yian's novel, the protagonist.

The protagonist Li Yian's novel belongs to the Tang Dynasty: the opening part played a magical trick.

In the early years of the Tang Dynasty, the change of Xuanwu Gate had just come to an end, and Turks were eyeing up in the north. Li Yian crossed over, activated the system template, and got the magic calculation inheritance. He wants to muddle along by the system and set up a stall at the head of Chang 'an Street to tell his fortune. Until one day, three people came to the booth and asked him about the national luck of Datang. Lao Li: "Sir, I am Datang. Can I live forever?" Lao Du: "If Mr. Wang Can becomes prime minister, Datang will have nothing to do with me."

The ending.

Five years later. Li Yi 'an built the first super-large hydropower station in Chang 'an.

Six years later. Li Yi 'an set up the first cable in history in Chang 'an.

Seven years later. The steam engine was made by Li Yian and others.

A few years later. Datang's industry has leapt to a new level.

The powerful Tang Dynasty conquered the world with the strongest military means!