Zhenguan General Store: From the Start, I Saved Empress Zhangsun

A top student at a modern university of traditional Chinese medicine and a history enthusiast, he transmigrates to Chang'an in the first year of Emperor Taizong's Zhenguan era (627), after an unexpected car accident.

He becomes the owner of a failing general store in a corner of Chang'an's Western Market in the early Zhenguan era. Just as he begins to worry about making a living in this unfamiliar age, the Civilization Seed General Store System activates! As he gazes at the System's shop, brimming with precious but expensive "divine treasures", snow-white refined salt, crystal-clear white sugar, "miracle medicine" that reduces fevers and inflammation, plans for steel blades sharp enough to cut through iron, high-yield crop seeds, and more, Li Heng realizes this isn't just a chance to survive, but a key to changing history! He knows that in just a few years, the virtuous Empress Zhangsun will die young of illness, becoming a great regret for Li Shimin and the early Tang dynasty.