The map represents the situation of Western Han dynasty in the 12th year of Emperor Gao (195 BC). 10 kingdoms existed within the Han empire at the time, and with the exception of Changsha, all are headed by members of the imperial family. 15 commanderies in the central and western parts of the empire were directly administered by the imperial government. 
The borders are based on Zhou Zhenhe's Xihan Zhengqu Dili (西汉政区地理, "Administrative Geography of Western Han"), 1987.
Own work based on: China - Song Dynasty - cs.svg by Mozzan
Esiymbro