The Great Son-in-Law at the End of the Ming: A New Face for Chongzhen, Ruling Through Conquest

[Ming Dynasty + Chongzhen Emperor + transmigration + political intrigue + invincible protagonist + ruthless decisiveness] I transmigrated as a useless live-in son-in-law at the end of the Ming Dynasty. Kicked out of the house from the start and penniless? Watch me activate the 3D Printing System. Silver, firearms, prosthetic limbs, even anything in this world can be printed for me. With the System's gifts, I use my medical skills to save beautiful women, my poetic talent to deliver face-slapping blows to the powerful, and a peerless Qinhuai performance to make a name for myself throughout Jiangnan. Those who once despised and humiliated me now kneel and beg for my mercy. Even the beauties who once cast me aside like trash plead for me to take them back. The four great beauties of Jiangnan fall for me. The princess who lost an arm is given a new life because of me. I can even reproduce the face of the Chongzhen Emperor down to the finest detail... Yet my gaze has long since passed beyond this land of soft comforts and prosperity. The Ming is on the verge of collapse, Chongzhen will hang himself, and the Qing army is marching south... The realm is in chaos. How can I simply look after myself? Alone, I head north and use the System to scan the emperor's face, crafting a perfect mask. From then on, my double sits on the Dragon Throne while I rule the realm from behind the scenes! I purge the court, crush the rebels, consolidate military power, and repel the northern invaders... Li Zicheng, Zhang Xianzhong, and Dorgon all want me dead? I need only raise a hand to summon an army beyond its time, ready to crush anyone who dares defy me. Just as everyone thinks I will lose myself in Jiangnan's tender beauties, I quietly tear off the Chongzhen mask and put it on myself. “This Dragon Throne is due for a new occupant.” From live-in son-in-law to regent, and then to ruler of all under heaven. This is a journey to imperial power, using technology to overwhelm a chaotic age with a higher level of force.