Twelve Lines of Beacon Smoke

The fictional dynasty——Dayin. Dayin was founded for more than 200 years, but it flourished and declined. The "Shuoting" cavalry in the north pressed south, the vassal towns in the west were divided, the salt and iron tyrants in the southeast were powerful, and the peace faction and the war faction in the court were at odds with each other. Ten years ago, the important northern town "Seven Forts of Yanmen" fell overnight. More than 30,000 soldiers of the Zhenbei Army were wiped out. The commander Gu Chongshan was convicted of "collaboration with the enemy and treason" and his entire family was executed. After that, the door to the north was opened, and the country's power continued to decline. But this is not the case. The fall was actually the result of a three-party conspiracy between the powerful ministers in the DPRK, the military supply chain, and the Shuoting court. The only thing that can restore the truth and bring out a batch of old departments, armories, border defense maps and secret oath lists is an old volume called **"Beiguan Secret Files"**. This secret file was split into twelve parts and scattered everywhere. Twelve people who were originally unrelated, each got one of them by accident, and were dragged into the game by the same net.