The Entire Nation Developing Another World

After waking up, Xia Xuan found himself crossing into a different world as the emperor of a constitutional monarchy.
Xia Xuan thought that he should be a mascot honestly and just enjoy the glory and wealth, but there is another system in his head? !
Ding Dong!
Explore a new world, please confirm the world information as soon as possible.
“New world?” Xia Xuan waved a black space door and appeared in front of him.
“Is it entered as a door? This way, there is a lot of room for maneuverability.”
“Come on, call me the Prime Minister immediately.”