I Transmigrated to the Three Kingdoms, Opened a Portal, and Handed It Over to the Nation

[Two Worlds + Three Kingdoms + Conquest + Resource Development + Ascension of an Entire Nation]

Liu Xiao was an overworked corporate drone who unexpectedly transmigrated to Zhending County in 184 AD, at the end of the Han Dynasty, and became its magistrate.

When the Yellow Turbans attacked the city, a portal happened to activate.

The portal connects to the modern world and can transport modern goods to him. Liu Xiao promptly turns it over to the state.

Using the objects Liu Xiao brings back from the end of the Han Dynasty, the nation makes major advances in archaeology, military industry, agriculture, and diplomacy.

With the nation's support, Liu Xiao also puts an end to the chaos and unifies the realm.