Three Kingdoms: Building a Technological Power from Scratch

Yun Feng, a doctor of science and engineering from modern times, accidentally traveled to the late Eastern Han Dynasty and awakened the technology tree system! Just when he was about to show off his grand ambitions and change the troubled times, he learned that the brutal Yellow Turban Army was about to attack the city! "Quick, quickly prepare something according to the order I wrote. With this thing, you can stop the enemy!" Overnight, a five-foot city wall was built to keep out the enemy, starting the road to hegemony in the late Eastern Han Dynasty, lighting up the science and technology tree step by step, and establishing an unparalleled technological power in China more than 2,000 years ago. All nations came to visit! Two thousand years later, archaeologists fell into deep contemplation when they saw the fragments of an Eastern Han Dynasty supersonic fighter excavated from 200 meters underground... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.