Originally, American ginseng was imported into China via subtropical Guangzhou, the seaport next to Hong Kong, so Chinese doctors believed American ginseng must be good for "yang", because it came from a hot area.
Kitajski/Korejski ginseng raste v severovzhodni Kitajski in Koreji, najhladnejšem kraju za mnoge Korejce v tistih časih.