I Opened a Time-Space Supermarket in the Tang Dynasty

When Qin Chaoyang awakens a time-space supermarket system, he becomes the most unconventional merchant in history—selling directly to Emperor Taizong himself! Low grain yields? Here's hybrid seeds and an auto-seeder. Foreign invaders at the gates? Try rocket launchers and Gatling guns. As the Tang Dynasty transforms from a struggling empire into an unstoppable superpower, Qin Chaoyang discovers that flipping ancient China into a modern military juggernaut is far more entertaining than running a boring convenience store. Who needs quarterly profits when you can become a king?