Zhao Tuo
The first period of Nanyue's subordination to the Han dynasty began in 196 BC when Zhao Tuo met Lü Jia, an emissary from Emperor Gaozu of Han, and received from him a Han imperial seal enthroning Zhao Tuo as King of Nanyue. This period lasted thirteen years until 183 BC, during which time significant trade took place. Nanyue paid tribute in rarities from the south, and the Han court bestowed gifts of iron tools, horses, and cattle upon Nanyue. At the same time, the countries' borders were always heavily guarded.