I Told You to Flee West to Shu, but You Went North to Lingwu and Declared Yourself Emperor?

I transmigrated into the Tang Dynasty and immediately ran into the mutiny at Mawei Station. My dad, Li Longji, takes off for Shu after brushing himself off, leaving me to die in his place as the crown prince? You really think I'm that meek pushover? I tore my imperial robe right there and refused to flee to Shu! With the God's-eye view of a thousand years of history, I'll carve out a path through this chaotic age! The two thousand imperial guards want to run? I drew my blade and made a solemn vow on the spot, breaking their bones and forging their military spirit anew! No food or pay? I'll reclaim wasteland, distribute land, and gather refugees, swelling my ranks with a hundred thousand death-sworn soldiers overnight! An envoy from the Shuofang Army comes kneeling with a roster, begging me to ascend the throne? I'll play the game of imperial power, lower my own status, and lead the regional commanders around like dogs! From driving back the rebel vanguard to fighting bloody battles to recapture the two capitals, I'll trample over the bodies of An Lushan and Shi Siming and restore the glory of the Tang! Six months later, Li Longji, trembling in hiding at Jiange, receives an urgent report and is so shocked he freezes: "What? The crown prince survived in Guanzhong and even put down the An-Shi Rebellion?!" Looking at the battle-hardened army of hundreds of thousands glaring up from below the city walls, I point my sword toward Shu: "Father, times have changed. Will you step down from the throne yourself, or should I help you do it?"