After his studies, Han became a painter in the Tang court.

Japanese envoys to the Tang court were received as ambassadors:

At least 17 diplomatic missions were specifically sent from Japan to the Tang court between the years 603 and 839.

The weak Tang court could only confirm his position.

For this the Tang court granted him the military governorship of Huainan.

(In the Tang court, both men and women played polo, a popular sport reserved for the aristocracy.)

Liu Yin, was named regional governor and military officer by the Tang court in 905.

His brother, Liu Yin, was named regional governor by the Tang court.

Wang was named military governor of western Sichuan by the Tang court in 891.

His motivation was to curry favour with the Tang court and probably also to obtain more troops.