Modern history enthusiast Yang Guang accidentally passed through the soul of Emperor Yang Guang of the Sui Dynasty when he first ascended the throne in the fourth year of Renshou (604). With a clear memory of the Sui Dynasty's imminent demise, he abandoned the extravagance and tyranny of the original owner and determined to reverse the fate of the country with his life's efforts. After taking the throne, he suspended the construction period of Dongdu, split the Grand Canal project to reduce the loss of people, deepened the reform of the imperial examination to check and balance the power, and adjusted the foreign strategy in an attempt to solve the Goguryeo problem smoothly. His sleepless nights and determination to innovate once gave the Sui Dynasty the illusion that the people's livelihood was improving and the court was clear. However, the inertia of history and the long-term disadvantages were far beyond imagination - the secret obstruction of the powerful clans, the deficit in people's livelihood left by years of war, the eagerness of the border tribes, and the unavoidable conflicts of interest during the reform process, which ultimately led to the accumulation of conflicts. Even though he tried his best to make up for his mistakes, he could never keep up with the speed of the crisis. In the end, in the wave of chaos and the rise of heroes, he watched the dynasty he had maintained with his own hands go to destruction, leaving behind a tragic regret of "knowing that it cannot be done but doing it".
