Help! The First Emperor Insists I Be His Support!

[No Romance + Heartwarming + Raising Kids + Growth-Oriented Female Lead + Infrastructure in the Early Stages + Fantasy in the Later Stages + Slow Pace + Sweet Moments]

Fusu: Father is looking at me with that disapproving look again. (Wronged)

Yin Man: Big Brother is such a nuisance. Father indulges him way too much!

Meng Yi: My brother really has never given me pigtails!

Meng Tian: That's right. (Too bad.)

Li Si: Your Majesty! Chunyu Yue has been utterly negligent!

Chunyu Yue: Just you wait, Old Li. Once I've recovered, I'll kill you!

An Sheng: Would His Majesty really hit a child?

Ying Zheng: Hmph.

The serious version:

By a stroke of fate, An Sheng transmigrated to the Qin Dynasty.

The good news: An Sheng got a System.

The bad news: An Sheng had shrunk into a four-year-old little girl.

The even worse news: An Sheng transmigrated right into Zhangtai Palace while court was in session.

An Sheng reassured herself:

Whatever, whatever. Does being little stop me from helping Brother Zheng unify the world?

But as the Qin Dynasty continued to flourish, An Sheng began to realize something seemed off.

Isn't this supposed to be ancient times? Why are fantasy things showing up too?

System! Are you hiding something from me?

P.S. The System's missions are just background flavor, there to provide a way to exchange technology and items.