The Spear Alone Guards the Soul of the Tang Dynasty

The fourteenth year of Tianbao was the last year of the Tang Dynasty. There is a twenty-day post road between Chang'an and Longyou - Chang'an's decree cannot reach Longyou, and Longyou's military information cannot reach Chang'an. Lu Hegui took 8,000 new soldiers to guard Shanzhou, replaced 3,000 elite soldiers, and dispersed them into Chang'an City to sweep the streets, build canals, and guard gates. When he left, he said to the woman waiting for him: "Chang'an is more important than Longyou." His brother Lu Lianji opened the door in Chang'an - the air-raid windows in Chiling, the arrowheads in Hexi, and the six-line secret letter, and sold the four states of Longyou to Tubo. He thought his younger brother was just an "empty shell who only knew how to fight." He didn't know that his younger brother held his secret message and guarded it until the city was broken. He didn't know until his death that Chang'an had already changed. Twenty days later, news of the city's destruction reached Chang'an. At that time, the forced labor was over, his brother was dead, the emperor had decided not to save Long You, and the woman waiting for him had received his last letter. "I didn't die in battle, I defended." Guard an inch, guard an inch.