In the 14th year of Orthodoxy, the Tumubao Incident did not happen. The young Emperor Yingzong of the Ming Dynasty, Zhu Qizhen, was injured inexplicably when he fell off his horse on the eve of his expedition, and the army was stranded in the capital. The following month, Ye Xian's army bypassed Datong and approached Zijingguan, but encountered a head-on attack from new types of firearms - no one knew where these weapons, known as "magic cannons," came from. At the same time, a mysterious businessman who calls himself "Mr. Zhang" appears in the capital. He possesses smelting technology that is far ahead of the times, but he always wears a bronze mask to show off. What's even more bizarre is that a fragment of the "Yongle Dadian" from the future began to circulate in the palace, which records history that has not yet happened...
"In the autumn of the 14th year of Zhengtong, the Tumu Fort incident that never happened changed the entire Ming Dynasty."
