Great Tang: You Asked Me to Be an Immortal Master, So I Really Used Magic

Ye Nian transmigrates to the Tang Dynasty by accident, bringing along a game System.

What if you don't know how to make guns and cannons?

Don't worry, try a meteor from the sky!

What if you don't know medicine?

Don't worry, try Purification and Resurrection spells!

Don't talk to me about military strategy. Once I activate the Berserk buff, my warriors are all humanoid mechs!

The ministers: The Immortal Venerable has blessed the Tang Dynasty. This is truly a blessing for our dynasty and its people!

Li Shimin: Ah, Immortal Master, this is my first time being the world's leader. I'm quite nervous.