Tech Princess: Dominate the World

Lin Wei, the top technological elite in the modern world, died unexpectedly. Her soul traveled to an imaginary ancient dynasty and became the ninth princess who was least favored by the emperor and was forgotten in the cold palace. Faced with the harsh living environment, scarce supplies, and ubiquitous court strife, she did not give in. Instead, she decided to use modern knowledge that transcended the times to find a way out for herself. Starting from making the simplest water purification device and soap to improve living conditions, she gradually accumulated tiny capital and hearts. She refined fine salt, invented the prototype of gunpowder, and established a secret business network. Not only did she get rid of her survival crisis, but she also gradually attracted the attention of all parties in the palace and even the emperor himself. With her achievements in curing the plague, she obtained her first barren fief. On the fiefdom, she truly embarked on a journey of rejuvenating the country through science and technology: improving agricultural tools, building water conservancy, mining mineral deposits, making steel and iron, and even building a primitive steam engine. Agricultural and industrial innovations made the territory rapidly prosperous and powerful, with refugees returning and talents gathering. She established schools, spread knowledge, and formed a new type of army. Her strength quietly expanded, and she grew from the "Princess of the Cold Palace" that no one cared about to the feared "Princess of Science and Technology." Her rise broke the original balance of power on the mainland. The suspicion within the imperial court, the jealousy of brothers and sisters, and the fear of surrounding countries formed a powerful counterattack alliance. However, Lin Wei's technology tree is still climbing rapidly: breech-loading guns, artillery, telegraphs, railways, tanks, airplanes, aircraft carriers... And finally entering the nuclear energy and computer era. Her army swept across the continent with overwhelming force and unified the world.