The Hans were pretty content to stay where they were since they did not perceive much value in the areas beyond proper China save for the land they lost in previous defeats to "barbarians." Even if they had ambitions to expand, they didn't have the military prowess to launch major invasions.
For the sake of this hypothetical scenario, however, lets assume that they do and they did invade foreign land(s).
What position do you think GJ would take?
Would he be against the invasion(s) against foreign sovereignties? Or would he be ok with it since the Han civilians are not the ones suffering?