A Balhae (발해) hunter peeled mud from a knobby root and handed it to a court physician in Chang'an, who stared like he'd been handed bottled life. The root smelled faintly sweet, and that smell changed how kings and monks treated illness for centuries.
Chinese court records, like the New Book of Tang, list ginseng from the lands of Balhae as regular tribute. Those wild roots came from forests north of the Korean Peninsula, and they were prized for a strange mix of myth and real effect. Tang doctors and nobles paid huge sums or traded political favors to get a few pieces, and that turned a humble root into a diplomatic weapon.
Back in Unified Silla's capital Gyeongju (경주), Buddhist temples were more than prayer halls. Monks ran infirmaries, kept herb gardens and copied medical texts brought from Tang. The monk Hyecho (혜초) wrote about foreign cures after his travels, and Jajang (자장) returned from China with practices that helped Silla priests treat wounds and fevers. These monasteries were the places people went when splints, acupuncture or a boiled decoction were the only options.
The trade in ginseng and other imports meant medicine was part of politics. A Balhae envoy could win a treaty by gifting roots. Court doctors learned formulas from imported Chinese works, then mixed them with local herbs. So treatments were practical and weird at once: acupuncture for a broken shoulder, powdered root as a tonic, incense from far lands for fevers. The sick got hands-on care, and the elite turned health into leverage.
So when you sip ginseng tea, remember it once changed who got in the door at the Tang court and where monks set up clinics back home. Medicine then was weird, worldly and political, and that mix still shapes how we chase health today.