I Opened a Pharmacy in the Tang Dynasty

Jiang Chen unexpectedly transmigrated to the ninth year of the Wude era of the Tang Dynasty. Although he acquired a System, its functions remained hidden for a long time.

One day, a richly dressed man came to ask for medicine, accidentally activating Jiang Chen's medical System. To improve his living conditions, Jiang Chen made an outrageous demand, never imagining that the man seeking medicine was none other than Prince Qin, Li Shimin!

However, Jiang Chen never learned the man's identity. He only wanted to treat the sick and help people, earning enough money to secure his livelihood.

After treating him, Jiang Chen achieved remarkable results by sheer luck and won Li Shimin's trust.

Li Shimin came to see him time and again, and Jiang Chen repeatedly helped him solve his problems...