I Opened a Time-Space Supermarket in the Tang Dynasty

Qin Chaoyang accidentally awakens a space-time supermarket System and starts trading directly with Emperor Taizong. “Daoist, food production in my Great Tang is low...” “No problem. I’ll sell you high-yield seeds and automatic planters!” “Daoist, our Great Tang is under attack by foreign enemies...” “I’ll sell you rocket launchers and Gatling guns. Let’s blow those bastards away!” “Daoist, our Great Tang is now prosperous and united. It’s all thanks to the Immortal! Daoist, you should be made a prince!” Qin Chaoyang happily munches on the fruit his maidservant feeds him. Making money through business is getting boring. Becoming a prince who isn’t of the imperial family sounds pretty good too!