Republican Chinese Empire (Land of Empires Map Game)

The Chinese Empire is a sovereign nation located in East Asia. It covers OTL Mongolia, China, and Vietnam. It is a constitutional monarchy. It is currently one of the great powers, and has it's own, albeit small, sphere of influence. It was formerly the biggest power before being overtaken by Japan. It has great relations with said Japan. It's main enemy is the Thai empire, and is also in competition.

Post WW2 (1948-1960)
To be writern game history.