Reborn as the Crown Prince of the Western Jin Dynasty

In the late third and early fourth centuries AD, the agricultural civilizations of both East and West were plunged into crisis... In the East, the Great Jin Empire had just ended a period of division and reunified the realm. After its first emperor died, it fell into more than a decade of turmoil, and all of China soon entered the darkest and most desperate period in its history... In the West, the Roman Empire was mired in more than a century of upheaval at court. Over twenty emperors met violent ends during this period, killed either by the Senate or by rebel armies. Worse still, several generals commanding powerful armies went on to establish breakaway regimes across Europe and the British Isles... But turbulent times make heroes! In the West, Constantine the Great successfully consolidated Roman rule, and under his reign Christianity became a legal religion... In the East, a lucky transmigrator arrives on the eve of the collapse of the Great Jin Empire. Can he change the empire's fate through his own efforts, and change his own fate as well?