When Qin Shihuang Yingzheng's dragon chariot crushed the setting sun on the Xianyang ancient road, he fell into the morning mist of Chang'an in the prosperous Tang Dynasty in the blink of an eye - he stepped into the Zhenguan court as a "foreign guest", shocking the peace under Li Shimin's rule. One is the emperor who swept across the world and came with the iron-blooded Qin government; the other is the Tian Khan who created a prosperous age and established a benevolent and virtuous rule. On the surface, the monarch and his ministers are in harmony with each other, but in fact, there is a surging undercurrent: the battle over tactics in border wars and the collision of concepts in court etiquette, like double-edged swords, separate the foundations of governance in the two eras.
Wei Zheng's remonstrance caused a storm in the Jinluan Palace, Empress Changsun's bronze mirror reflected her powerful plans, and Li Jiancheng's abacus even muddied the situation. When the difference between high-pressure intimidation and gentle appeasement led to a bloody defeat, suspicion spread in the emperor's mind like a plague. When the impeachment memorial came like snowflakes, the candlelight in the Taiji Palace illuminated the confrontation between the two emperors: one held the imperial seal in his hand, and his eyes were filled with the arrogance of "he is destined to return"; the other stood with his sword in his hand, with the murderous intention of "cold face and cold iron" hidden in his eyes.
However, when the blade was about to be unsheathed, the rift in time and space suddenly tore open - Ying Zheng disappeared in the bloody dawn, leaving only the Qinling pines echoing the sigh that spanned thousands of years. He returned to Xianyang Palace to continue writing the imperial legend, and Li Shimin resumed the long song of Zhenguan in front of Xuanwu Gate. The cold waves of the Wei River are still flowing, reflecting the moon wheels of the two eras. In the end, "one mountain cannot tolerate two tigers", each of which has become a shocking event in the history books.
