King of Zhenbei: the Gun Is Pointed at Chang'an, His Majesty Kneels to Welcome Him

In the middle of the Dayan Dynasty, war broke out in northern Xinjiang. Gu Bei, a king with a different surname from Dayan, led his army to conquer Mobei at the age of fifteen, and was granted the title of king at the age of twenty. He holds the myth of the undefeated Northern Territory. He suppressed the army in the north, and relied on the three strategies of "improved continuous crossbows, fortress defense, and cavalry attack" to prevent Mobei and Shatuo from invading the border for ten years! However, his great achievements shocked the master, and the four major families tried to undermine him. Under the pressure of the family, Emperor Zhao Heng reduced the prince's title and seized military power. Qin Feng, the deputy general of Zhenbei Army, secretly cut off food. As a result, when Gu Bei led 30,000 elite soldiers to cut off the rear, he was empty-handed and fought with Mobei. Only a thousand remaining troops retreated to Heifeng Village. Afterwards, he beheaded Qin Feng, erected a loyalty monument, and vowed not to enter the court again. When the four major families united with Mobei to surround Heifeng Stronghold, and the people of Northern Xinjiang were massacred again, the King of Zhenbei, who once made the barbarians surrender, finally took up his gun and mounted his horse, leading the remnants of Zhenbei to fight out of Heifeng Stronghold and all the way back to Chang'an! The Khan of Mobei was crowned and the four major families were destroyed. Zhao Heng led hundreds of officials to kneel down to greet the Suzaku Gate, but Gu Bei broke the Zhenbei King's Seal: "I return to the court only for my loyal soul, not for the emperor!"